Westinghouse Air Brake Co
WestinghouActive Patents
0
Total Holdings
220
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US5129605A | Rail vehicle positioning system | Expired / Lapsed | 1990-09-17 | 1992-07-14 | 13 | Details |
| US3937622A | Air purifier system | Expired / Lapsed | 1973-09-17 | 1976-02-10 | 18 | Details |
| US3893544A | Pneumatic-hydraulic brake apparatus for a four-wheel truck | Expired / Lapsed | 1974-03-13 | 1975-07-08 | 12 | Details |
| US3785679A | Cushioned bumper for scrapers | Expired / Lapsed | 1972-04-10 | 1974-01-15 | 9 | Details |
| US3623777A | Fluidic brake control system having safety and overspeed co… | Expired / Lapsed | 1969-11-12 | 1971-11-30 | 15 | Details |
| US3553488A | Fail-safe circuit arrangement | Expired / Lapsed | 1968-02-06 | 1971-01-05 | 21 | Details |
| US3526886A | Precision location detector | Expired / Lapsed | 1968-03-26 | 1970-09-01 | 0 | Details |
| US3512024A | Frameless permissible dynamoelectric machine | Expired / Lapsed | 1968-08-19 | 1970-05-12 | 0 | Details |
| US3506823A | Vehicle speed control system | Expired / Lapsed | 1967-12-21 | 1970-04-14 | 0 | Details |
| US3482643A | System to control and duplicate movement hydraulically | Expired / Lapsed | 1968-03-18 | 1969-12-09 | 0 | Details |
| US3482887A | Combined anti-slip and anti-spin control for vehicle wheels | Expired / Lapsed | 1968-01-26 | 1969-12-09 | 0 | Details |
| US3472000A | Air dryer and purge control unit | Expired / Lapsed | 1968-04-29 | 1969-10-14 | 0 | Details |
| US3398994A | Anti-skid wheel control system for railway cars | Expired / Lapsed | 1966-09-14 | 1968-08-27 | 2 | Details |
| US3361905A | Movable block vehicle speed control system | Expired / Lapsed | 1966-01-18 | 1968-01-02 | 2 | Details |
| US3335227A | Coordination of telephone and remote control transmission o… | Expired / Lapsed | 1963-10-16 | 1967-08-08 | 2 | Details |
| US3309864A | Flexible link connection | Expired / Lapsed | 1964-11-06 | 1967-03-21 | 2 | Details |
| US3300639A | Brake and propulsion control system for automated trains | Expired / Lapsed | 1963-08-23 | 1967-01-24 | 2 | Details |
| US3268662A | Coordination arrangement for telephone and remote control c… | Expired / Lapsed | 1962-05-24 | 1966-08-23 | 2 | Details |
| US3252471A | Multi-purpose valve device | Expired / Lapsed | 1963-04-17 | 1966-05-24 | 2 | Details |
| US3253126A | Automatic train identification system | Expired / Lapsed | 1961-06-08 | 1966-05-24 | 2 | Details |
| US3242323A | Binary to decimal binary code translator | Expired / Lapsed | 1962-12-10 | 1966-03-22 | 1 | Details |
| US3199770A | Lubricating oil pressure control apparatus for unloading co… | Expired / Lapsed | 1963-07-30 | 1965-08-10 | 2 | Details |
| US3189885A | Coded detecting systems | Expired / Lapsed | 1961-07-10 | 1965-06-15 | 1 | Details |
| US3168269A | Track instruments | Expired / Lapsed | 1961-12-05 | 1965-02-02 | 1 | Details |
| US3130867A | Pipeline metering and product delivery control system | Expired / Lapsed | 1961-05-16 | 1964-04-28 | 1 | Details |
| US3131309A | Transistor amplifier-switching circuit with zener diode lim… | Expired / Lapsed | 1958-10-30 | 1964-04-28 | 2 | Details |
| US3117303A | Random access switching system | Expired / Lapsed | 1959-03-13 | 1964-01-07 | 2 | Details |
| US3096056A | Locomotive remote control system | Expired / Lapsed | 1961-01-25 | 1963-07-02 | 2 | Details |
| US3072147A | Electro-pneumatic translator | Expired / Lapsed | 1961-09-29 | 1963-01-08 | 2 | Details |
| US3054560A | Computer test and change-over circuit | Expired / Lapsed | 1958-02-04 | 1962-09-18 | 0 | Details |
| US3048675A | Multi-position manual control valve with step-by-step insur… | Expired / Lapsed | 1959-09-29 | 1962-08-07 | 0 | Details |
| US3041448A | Automatic train operation system | Expired / Lapsed | 1961-02-20 | 1962-06-26 | 0 | Details |
| US3009056A | Vehicle weighing devices | Expired / Lapsed | 1956-06-01 | 1961-11-14 | 0 | Details |
| US3004149A | Railway track occupancy detectors | Expired / Lapsed | 1959-10-28 | 1961-10-10 | 0 | Details |
| US2998284A | Multiple-unit locomotive brake control equipment | Expired / Lapsed | 1959-08-24 | 1961-08-29 | 0 | Details |
| US2994564A | Apparatus for inhibiting spin of railway locomotive wheels … | Expired / Lapsed | 1959-07-02 | 1961-08-01 | 0 | Details |
| US2991372A | Voltage signal comparison means with storage means | Expired / Lapsed | 1960-02-08 | 1961-07-04 | 0 | Details |
| US2988388A | Articulated brake cylinder push rod | Expired / Lapsed | 1959-12-23 | 1961-06-13 | 0 | Details |
| US2986427A | Variable load brake control apparatus for railway cars | Expired / Lapsed | 1959-01-28 | 1961-05-30 | 0 | Details |
| US2961151A | Rotary compressor | Expired / Lapsed | 1958-05-05 | 1960-11-22 | 0 | Details |
| US2961147A | Control system for fluid compressors | Expired / Lapsed | 1958-04-07 | 1960-11-22 | 0 | Details |
| US2955573A | Pneumatic tool | Expired / Lapsed | 1958-02-06 | 1960-10-11 | 0 | Details |
| US2955804A | Drill bit | Expired / Lapsed | 1958-01-27 | 1960-10-11 | 0 | Details |
| US2951297A | Radar simulation systems | Expired / Lapsed | 1955-06-01 | 1960-09-06 | 0 | Details |
| US2941046A | Automatic gain control circuit | Expired / Lapsed | 1958-01-27 | 1960-06-14 | 0 | Details |
| US2937801A | Compressor control system | Expired / Lapsed | 1958-02-24 | 1960-05-24 | 0 | Details |
| US2934754A | Code converters | Expired / Lapsed | 1957-02-26 | 1960-04-26 | 0 | Details |
| US2933350A | Electrol-pneumatic and dynamic brake apparatus | Expired / Lapsed | 1956-06-28 | 1960-04-19 | 0 | Details |
| US2919161A | Variable load brake control apparatus for railway cars | Expired / Lapsed | 1956-10-30 | 1959-12-29 | 0 | Details |
| US2910578A | Automatic control of railway classification yard switches | Expired / Lapsed | 1955-12-23 | 1959-10-27 | 0 | Details |
| US2906865A | Vehicle weighing means | Expired / Lapsed | 1955-04-13 | 1959-09-29 | 0 | Details |
| US2905199A | Fluid pressure actuator | Expired / Lapsed | 1953-12-28 | 1959-09-22 | 0 | Details |
| US2901609A | Differentiator | Expired / Lapsed | 1956-05-02 | 1959-08-25 | 0 | Details |
| US2884516A | Phase sensitive alternating current track circuit | Expired / Lapsed | 1956-09-21 | 1959-04-28 | 0 | Details |
| US2875788A | Pulsation dampener device | Expired / Lapsed | 1956-02-27 | 1959-03-03 | 0 | Details |
| US2870408A | Precise automatic multirange indicating voltmeter and/or ra… | Expired / Lapsed | 1955-04-25 | 1959-01-20 | 0 | Details |
| US2841745A | Electric speed governors | Expired / Lapsed | 1955-09-09 | 1958-07-01 | 0 | Details |
| US2828480A | Train identification systems | Expired / Lapsed | 1955-03-18 | 1958-03-25 | 0 | Details |
| US2824687A | Rotary compressor | Expired / Lapsed | 1955-10-26 | 1958-02-25 | 0 | Details |
| US2818244A | Deceleration responsive apparatus | Expired / Lapsed | 1954-11-22 | 1957-12-31 | 0 | Details |
| US2800645A | Electric circuit integrity checking apparatus | Expired / Lapsed | 1955-01-27 | 1957-07-23 | 0 | Details |
| US2800644A | Electric checking apparatus | Expired / Lapsed | 1954-06-30 | 1957-07-23 | 0 | Details |
| US2790071A | Vehicle reporting systems | Expired / Lapsed | 1951-10-17 | 1957-04-23 | 0 | Details |
| US2779583A | Vehicle weight responsive means | Expired / Lapsed | 1954-01-22 | 1957-01-29 | 0 | Details |
| US2768371A | Sound simulator for use in aircraft pilot trainers | Expired / Lapsed | 1955-06-09 | 1956-10-23 | 0 | Details |
| US2759570A | Automatically controlled brake apparatus, including means f… | Expired / Lapsed | 1953-09-15 | 1956-08-21 | 0 | Details |
| US2753550A | Vehicle reporting systems | Expired / Lapsed | 1951-03-03 | 1956-07-03 | 0 | Details |
| US2747611A | Control valve device | Expired / Lapsed | 1953-01-23 | 1956-05-29 | 0 | Details |
| US2747081A | Dragging equipment detector system | Expired / Lapsed | 1950-10-31 | 1956-05-22 | 0 | Details |
| US2736882A | Circuit integrity checking system | Expired / Lapsed | 1952-07-18 | 1956-02-28 | 0 | Details |
| US2721579A | Flexible diaphragm support | Expired / Lapsed | 1954-03-09 | 1955-10-25 | 0 | Details |
| US2721839A | Plating apparatus for electrical rectifiers | Expired / Lapsed | 1951-10-17 | 1955-10-25 | 2 | Details |
| US2720429A | Compensating valve device for load compensating brake equip… | Expired / Lapsed | 1951-12-15 | 1955-10-11 | 0 | Details |
| US2720428A | Load compensating brake apparatus | Expired / Lapsed | 1951-11-08 | 1955-10-11 | 0 | Details |
| US2709723A | Encased microphones | Expired / Lapsed | 1953-11-12 | 1955-05-31 | 0 | Details |
| US2699972A | Fluid pressure brake equipment | Expired / Lapsed | 1951-04-26 | 1955-01-18 | 0 | Details |
| US2698425A | Remote-control system | Expired / Lapsed | 1953-09-29 | 1954-12-28 | 0 | Details |
| US2695399A | Means for detecting energy of predetermined frequencies in … | Expired / Lapsed | 1952-03-14 | 1954-11-23 | 0 | Details |
| US2692942A | Four-indication signal control system embodying polar biase… | Expired / Lapsed | 1950-12-30 | 1954-10-26 | 0 | Details |
| US2691867A | Fuel control system for turbojet engines | Expired / Lapsed | 1950-04-25 | 1954-10-19 | 0 | Details |
| US2690939A | Fluid pressure cylinder | Expired / Lapsed | 1950-12-20 | 1954-10-05 | 0 | Details |
| US2684466A | Means for testing inductors | Expired / Lapsed | 1951-02-20 | 1954-07-20 | 0 | Details |
| US2673321A | Transformer voltage regulating arrangement | Expired / Lapsed | 1950-10-19 | 1954-03-23 | 0 | Details |
| US2673292A | Vehicle reporting system | Expired / Lapsed | 1949-07-16 | 1954-03-23 | 0 | Details |
| US2670434A | Train describer system | Expired / Lapsed | 1951-06-26 | 1954-02-23 | 0 | Details |
| US2670433A | Cab signal apparatus | Expired / Lapsed | 1949-06-18 | 1954-02-23 | 0 | Details |
| US2666131A | Supplementary apparatus for railway signaling systems | Expired / Lapsed | 1949-03-05 | 1954-01-12 | 0 | Details |
| US2659880A | Apparatus for detecting recurrent circuit operation | Expired / Lapsed | 1951-12-28 | 1953-11-17 | 0 | Details |
| US2654081A | Code detecting apparatus | Expired / Lapsed | 1950-04-28 | 1953-09-29 | 0 | Details |
| US2649538A | Space intrusion detection system | Expired / Lapsed | 1949-10-13 | 1953-08-18 | 0 | Details |
| US2643370A | Electric circuit checking equipment | Expired / Lapsed | 1951-03-26 | 1953-06-23 | 0 | Details |
| US2637341A | Fluid pressure control valve device | Expired / Lapsed | 1949-07-27 | 1953-05-05 | 0 | Details |
| US2634401A | Alternate line circuits for communication systems | Expired / Lapsed | 1952-01-26 | 1953-04-07 | 0 | Details |
| US2625597A | Annunciator circuit | Expired / Lapsed | 1952-02-19 | 1953-01-13 | 0 | Details |
| US2623163A | Speed responsive apparatus for detecting overspeed | Expired / Lapsed | 1947-11-25 | 1952-12-23 | 0 | Details |
| US2622142A | Automatic reservation system of the code type | Expired / Lapsed | 1950-07-22 | 1952-12-16 | 0 | Details |
| US2607023A | Electron tube circuit means responsive to a signal pulse of… | Expired / Lapsed | 1950-04-11 | 1952-08-12 | 0 | Details |
| US2607001A | Code detecting means | Expired / Lapsed | 1947-03-18 | 1952-08-12 | 0 | Details |
| US2605334A | Circuit integrity indicating system | Expired / Lapsed | 1951-05-29 | 1952-07-29 | 0 | Details |
| US2601140A | Wheel slide indicating apparatus | Expired / Lapsed | 1950-01-25 | 1952-06-17 | 0 | Details |
| US2596013A | Transmitting and receiving circuits for inductive carrier c… | Expired / Lapsed | 1950-01-17 | 1952-05-06 | 0 | Details |
| US2588806A | Alternating current rectifier of the dry surface contact ty… | Expired / Lapsed | 1948-02-28 | 1952-03-11 | 0 | Details |
| US2585505A | Railway signaling system | Expired / Lapsed | 1947-02-20 | 1952-02-12 | 0 | Details |
| US2581510A | Electric relays | Expired / Lapsed | 1949-01-08 | 1952-01-08 | 0 | Details |
| US2581552A | Railway train describer | Expired / Lapsed | 1946-09-06 | 1952-01-08 | 0 | Details |
| US2580155A | Proximity detector employing microwaves | Expired / Lapsed | 1949-06-04 | 1951-12-25 | 0 | Details |
| US2576038A | Centralized traffic control system for the code control of … | Expired / Lapsed | 1946-11-09 | 1951-11-20 | 0 | Details |
| US2574783A | Rectifier assembly | Expired / Lapsed | 1949-06-24 | 1951-11-13 | 0 | Details |
| US2574774A | Remote-control system | Expired / Lapsed | 1949-04-30 | 1951-11-13 | 0 | Details |
| US2571973A | Annunciator | Expired / Lapsed | 1947-08-13 | 1951-10-16 | 0 | Details |
| US2545532A | Control apparatus | Expired / Lapsed | 1946-05-14 | 1951-03-20 | 0 | Details |
| US2505260A | Control apparatus | Expired / Lapsed | 1945-04-07 | 1950-04-25 | 0 | Details |
| US2496916A | Scotch block apparatus | Expired / Lapsed | 1947-01-14 | 1950-02-07 | 0 | Details |
| US2477836A | Control apparatus | Expired / Lapsed | 1944-08-30 | 1949-08-02 | 0 | Details |
| US2477819A | Temperature responsive apparatus | Expired / Lapsed | 1944-03-30 | 1949-08-02 | 0 | Details |
| US2473683A | Relay control system | Expired / Lapsed | 1945-06-23 | 1949-06-21 | 0 | Details |
| US2472526A | Underspeed motor protective system | Expired / Lapsed | 1945-01-26 | 1949-06-07 | 0 | Details |
| US2468199A | Electronic wheel slip detector | Expired / Lapsed | 1945-03-30 | 1949-04-26 | 0 | Details |
| US2452176A | Fluid pressure controlled actuator | Expired / Lapsed | 1945-03-14 | 1948-10-26 | 0 | Details |
| US2447857A | Load compensating fluid pressure brake equipment | Expired / Lapsed | 1947-05-21 | 1948-08-24 | 0 | Details |
| US2428452A | Ring type cylinder and piston | Expired / Lapsed | 1943-12-11 | 1947-10-07 | 0 | Details |
| US2426063A | Clutch operating mechanism | Expired / Lapsed | 1942-06-23 | 1947-08-19 | 0 | Details |
| US2418129A | Follow-up pressure fluid servomotor | Expired / Lapsed | 1942-12-31 | 1947-04-01 | 0 | Details |
| US2417197A | Air compressor apparatus | Expired / Lapsed | 1943-08-21 | 1947-03-11 | 0 | Details |
| US2413380A | Fluid pressure motor | Expired / Lapsed | 1944-08-31 | 1946-12-31 | 0 | Details |
| US2411748A | Control device | Expired / Lapsed | 1944-05-20 | 1946-11-26 | 0 | Details |
| US2385156A | Pipe coupling | Expired / Lapsed | 1943-11-02 | 1945-09-18 | 0 | Details |
| US2383278A | Fluid pressure control mechanism | Expired / Lapsed | 1942-10-29 | 1945-08-21 | 0 | Details |
| US2381211A | Electric decelerometer | Expired / Lapsed | 1942-06-27 | 1945-08-07 | 0 | Details |
| US2381225A | Wheel-slip detecting device | Expired / Lapsed | 1941-10-31 | 1945-08-07 | 0 | Details |
| US2379289A | Control device | Expired / Lapsed | 1942-09-29 | 1945-06-26 | 0 | Details |
| US2361099A | Vehicle brake and propulsion control | Expired / Lapsed | 1942-07-30 | 1944-10-24 | 0 | Details |
| US2344858A | Brake cylinder device | Expired / Lapsed | 1942-03-28 | 1944-03-21 | 0 | Details |
| US2344868A | Variable load brake | Expired / Lapsed | 1942-01-31 | 1944-03-21 | 0 | Details |
| US2337717A | Vehicle brake and propulsion control | Expired / Lapsed | 1941-11-29 | 1943-12-28 | 0 | Details |
| US2334863A | Apparatus for detecting relation of speeds of two different… | Expired / Lapsed | 1941-01-30 | 1943-11-23 | 0 | Details |
| US2317119A | Compressor control system | Expired / Lapsed | 1941-05-31 | 1943-04-20 | 0 | Details |
| US2311851A | Check valve device | Expired / Lapsed | 1941-11-27 | 1943-02-23 | 0 | Details |
| US2302418A | Antifreezing device | Expired / Lapsed | 1940-11-28 | 1942-11-17 | 0 | Details |
| US2299472A | Port protector | Expired / Lapsed | 1941-02-28 | 1942-10-20 | 0 | Details |
| US2294602A | Brake control system | Expired / Lapsed | 1941-06-28 | 1942-09-01 | 0 | Details |
| US2283608A | Brake control means | Expired / Lapsed | 1941-02-28 | 1942-05-19 | 0 | Details |
| US2279392A | Locomotive brake control system | Expired / Lapsed | 1940-12-31 | 1942-04-14 | 0 | Details |
| US2277035A | Brake control means | Expired / Lapsed | 1940-08-31 | 1942-03-24 | 0 | Details |
| US2277135A | Compressor apparatus | Expired / Lapsed | 1940-04-29 | 1942-03-24 | 0 | Details |
| US2258820A | Brake control means | Expired / Lapsed | 1939-09-29 | 1941-10-14 | 0 | Details |
| US2256287A | Brake control means | Expired / Lapsed | 1940-04-30 | 1941-09-16 | 0 | Details |
| US2249868A | Brake control system | Expired / Lapsed | 1940-02-29 | 1941-07-22 | 0 | Details |
| US2229498A | Compressed air conditioning apparatus | Expired / Lapsed | 1939-04-27 | 1941-01-21 | 0 | Details |
| US2218616A | Brake means | Expired / Lapsed | 1939-06-30 | 1940-10-22 | 0 | Details |
| US2204815A | Load brake apparatus | Expired / Lapsed | 1939-03-31 | 1940-06-18 | 0 | Details |
| US2204807A | Brake mechanism | Expired / Lapsed | 1939-01-31 | 1940-06-18 | 0 | Details |
| US2184568A | Brake control device | Expired / Lapsed | 1937-12-15 | 1939-12-26 | 0 | Details |
| US2170249A | Automatic weighing device | Expired / Lapsed | 1937-05-22 | 1939-08-22 | 0 | Details |
| US2170074A | Air filter | Expired / Lapsed | 1936-10-15 | 1939-08-22 | 0 | Details |
| US2170086A | Fluid pressure brake | Expired / Lapsed | 1936-07-17 | 1939-08-22 | 0 | Details |
| US2165999A | Fluid pressure brake | Expired / Lapsed | 1938-04-12 | 1939-07-11 | 0 | Details |
| US2159815A | Compressor lubricating device | Expired / Lapsed | 1937-03-27 | 1939-05-23 | 0 | Details |
| US2145567A | Electropneumatic brake | Expired / Lapsed | 1937-06-30 | 1939-01-31 | 0 | Details |
| US2142184A | Diaphragm horn | Expired / Lapsed | 1936-01-18 | 1939-01-03 | 0 | Details |
| US2137221A | Motor protection device | Expired / Lapsed | 1937-01-13 | 1938-11-22 | 0 | Details |
| US2137219A | Compressor control mechanism | Expired / Lapsed | 1935-08-22 | 1938-11-22 | 0 | Details |
| US2135248A | Compressor control | Expired / Lapsed | 1936-05-26 | 1938-11-01 | 0 | Details |
| US2130618A | Fluid pressure motor and locking means therefor | Expired / Lapsed | 1937-04-30 | 1938-09-20 | 0 | Details |
| US2130607A | Compressor governor | Expired / Lapsed | 1935-06-13 | 1938-09-20 | 0 | Details |
| US2128050A | Vent opening protector | Expired / Lapsed | 1937-05-29 | 1938-08-23 | 0 | Details |
| US2113615A | Vent protector | Expired / Lapsed | 1936-05-07 | 1938-04-12 | 0 | Details |
| US2110691A | Compressor valve | Expired / Lapsed | 1936-03-21 | 1938-03-08 | 0 | Details |
| US2110702A | Power reverse gear | Expired / Lapsed | 1936-02-19 | 1938-03-08 | 0 | Details |
| US2106488A | Compressor | Expired / Lapsed | 1934-02-24 | 1938-01-25 | 0 | Details |
| US2088180A | Packing | Expired / Lapsed | 1934-11-03 | 1937-07-27 | 0 | Details |
| US2084680A | Electric brake device | Expired / Lapsed | 1936-05-12 | 1937-06-22 | 0 | Details |
| US2074738A | Control for compressors and the like | Expired / Lapsed | 1932-07-30 | 1937-03-23 | 0 | Details |
| US2071718A | Variable load brake | Expired / Lapsed | 1935-11-19 | 1937-02-23 | 0 | Details |
| US2068370A | Inertia operated control device | Expired / Lapsed | 1934-02-27 | 1937-01-19 | 0 | Details |
| US2065204A | Compressor unloading device | Expired / Lapsed | 1935-01-30 | 1936-12-22 | 0 | Details |
| US2052199A | Electric brake device | Expired / Lapsed | 1933-11-07 | 1936-08-25 | 0 | Details |
| US2038174A | Brake control means | Expired / Lapsed | 1935-08-01 | 1936-04-21 | 0 | Details |
| US2017684A | Fluid compressor | Expired / Lapsed | 1933-10-31 | 1935-10-15 | 0 | Details |
| US2004652A | Process of making cylinder packings | Expired / Lapsed | 1933-10-28 | 1935-06-11 | 0 | Details |
| US2004669A | Packing cup | Expired / Lapsed | 1932-09-09 | 1935-06-11 | 0 | Details |
| US1998265A | Compressor control mechanism | Expired / Lapsed | 1933-12-21 | 1935-04-16 | 0 | Details |
| US1991902A | Brake valve device | Expired / Lapsed | 1930-11-13 | 1935-02-19 | 0 | Details |
| US1984887A | Angle cock device | Expired / Lapsed | 1932-03-12 | 1934-12-18 | 0 | Details |
| US1956683A | Pipe coupling | Expired / Lapsed | 1931-11-19 | 1934-05-01 | 0 | Details |
| US1956691A | Quick action valve device | Expired / Lapsed | 1930-10-31 | 1934-05-01 | 0 | Details |
| US1947727A | Door control device | Expired / Lapsed | 1930-07-31 | 1934-02-20 | 0 | Details |
| US1935813A | Air strainer | Expired / Lapsed | 1931-08-15 | 1933-11-21 | 0 | Details |
| US1922911A | Compressor governor | Expired / Lapsed | 1928-05-23 | 1933-08-15 | 0 | Details |
| US1914600A | Flexible gasket | Expired / Lapsed | 1931-08-06 | 1933-06-20 | 0 | Details |
| US1910600A | Pneumatic steering device | Expired / Lapsed | 1928-10-11 | 1933-05-23 | 0 | Details |
| US1898546A | Signal controlling device | Expired / Lapsed | 1931-05-08 | 1933-02-21 | 0 | Details |
| US1895480A | Compressor unloader | Expired / Lapsed | 1931-02-26 | 1933-01-31 | 0 | Details |
| US1895476A | Safety car control device | Expired / Lapsed | 1930-04-21 | 1933-01-31 | 0 | Details |
| US1891668A | Multiple speed governor device | Expired / Lapsed | 1929-01-31 | 1932-12-20 | 0 | Details |
| US1887578A | Fluid pressure regulating valve device | Expired / Lapsed | 1930-08-13 | 1932-11-15 | 0 | Details |
| US1879678A | Electropneumatic brake | Expired / Lapsed | 1929-10-12 | 1932-09-27 | 0 | Details |
| US1865090A | Vehicle brake equipment | Expired / Lapsed | 1930-07-18 | 1932-06-28 | 0 | Details |
| US1865125A | Brake regulator | Expired / Lapsed | 1930-06-10 | 1932-06-28 | 0 | Details |
| US1854738A | Dirt collector | Expired / Lapsed | 1930-03-18 | 1932-04-19 | 0 | Details |
| US1850609A | Brake device | Expired / Lapsed | 1929-02-14 | 1932-03-22 | 0 | Details |
| US1837473A | Slack adjusting device | Expired / Lapsed | 1929-09-20 | 1931-12-22 | 0 | Details |
| US1805668A | Packing ring | Expired / Lapsed | 1926-05-01 | 1931-05-19 | 0 | Details |
| US1801855A | Fluid-pressure brake | Expired / Lapsed | 1929-06-01 | 1931-04-21 | 0 | Details |
| US1707241A | Fluid-pressure brake | Expired / Lapsed | 1927-06-04 | 1929-04-02 | 0 | Details |
| US1585833A | Variable-load device | Expired / Lapsed | 1924-07-23 | 1926-05-25 | 0 | Details |
| US1553614A | Motor-vehicle control mechanism | Expired / Lapsed | 1924-01-11 | 1925-09-15 | 0 | Details |
| US1530487A | Fluid-pressure brake | Expired / Lapsed | 1923-05-19 | 1925-03-24 | 0 | Details |
| US1526812A | Train-control device | Expired / Lapsed | 1924-03-13 | 1925-02-17 | 0 | Details |
| US1525627A | Feed-valve device | Expired / Lapsed | 1922-01-25 | 1925-02-10 | 0 | Details |
| US1501157A | Electric coupling for cars | Expired / Lapsed | 1919-07-05 | 1924-07-15 | 0 | Details |
| US1438317A | Automotive brake equipment | Expired / Lapsed | 1921-12-14 | 1922-12-12 | 0 | Details |
| US1394057A | Electric coupling device | Expired / Lapsed | 1918-05-04 | 1921-10-18 | 0 | Details |
| US1214615A | Electrically-controlled brake. | Expired / Lapsed | 1914-10-03 | 1917-02-06 | 0 | Details |
| US1199840A | Fluid-pressure brake. | Expired / Lapsed | 1915-05-14 | 1916-10-03 | 0 | Details |
| US1082295A | Electropneumatic control-valve mechanism. | Expired / Lapsed | 1910-06-29 | 1913-12-23 | 0 | Details |
| US1034662A | Steam-pump governor. | Expired / Lapsed | 1909-01-23 | 1912-08-06 | 0 | Details |
| US870806A | Fluid-pressure brake. | Expired / Lapsed | 1907-04-12 | 1907-11-12 | 0 | Details |
| US851691A | Electric switch mechanism. | Expired / Lapsed | 1905-08-02 | 1907-04-30 | 0 | Details |
| US851277A | Fluid-pressure brake. | Expired / Lapsed | 1904-07-14 | 1907-04-23 | 0 | Details |