Sperry Products Inc
Sperry ProActive Patents
0
Total Holdings
83
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB714564A | Improvements in or relating to method and apparatus for the… | Expired / Lapsed | 1952-12-03 | — | 0 | Details |
| US3057188A | Ultrasonic mechanical impedance measuring device | Expired / Lapsed | 1958-10-30 | 1962-10-09 | 0 | Details |
| US3036231A | High resolution piezoelectric transducer | Expired / Lapsed | 1958-07-24 | 1962-05-22 | 2 | Details |
| US3033029A | Amplifier gain compensator for variable ultrasonic signal r… | Expired / Lapsed | 1958-01-14 | 1962-05-08 | 0 | Details |
| US2888824A | Ultrasonic thickness gauge | Expired / Lapsed | 1955-03-21 | 1959-06-02 | 0 | Details |
| US2883860A | Automatic ultrasonic inspection | Expired / Lapsed | 1955-01-20 | 1959-04-28 | 0 | Details |
| US2873391A | Methods and means for coupling an ultrasonic transducer to … | Expired / Lapsed | 1955-11-04 | 1959-02-10 | 0 | Details |
| US2839916A | Ultrasonic thickness gauge | Expired / Lapsed | 1954-08-19 | 1958-06-24 | 0 | Details |
| US2828456A | Servomechanism | Expired / Lapsed | 1953-11-27 | 1958-03-25 | 0 | Details |
| US2800789A | Ultrasonic inspection device | Expired / Lapsed | 1954-05-27 | 1957-07-30 | 0 | Details |
| US2792545A | Digital servomechanism | Expired / Lapsed | 1953-08-25 | 1957-05-14 | 0 | Details |
| US2787158A | Static scanning device in ultrasonic inspection of materials | Expired / Lapsed | 1953-07-23 | 1957-04-02 | 0 | Details |
| US2787160A | Ultrasonic liquid depth indicator | Expired / Lapsed | 1953-06-29 | 1957-04-02 | 0 | Details |
| US2784359A | Digital curve generator | Expired / Lapsed | 1953-09-22 | 1957-03-05 | 0 | Details |
| US2779870A | Amplitude comparison circuit | Expired / Lapsed | 1952-09-11 | 1957-01-29 | 0 | Details |
| US2740289A | Automatic scanning and recording device for ultrasonic insp… | Expired / Lapsed | 1953-03-20 | 1956-04-03 | 0 | Details |
| US2709760A | Variable angle ultrasonic search unit | Expired / Lapsed | 1952-03-14 | 1955-05-31 | 0 | Details |
| US2705422A | Ultrasonic inspection device | Expired / Lapsed | 1951-03-30 | 1955-04-05 | 0 | Details |
| US2693105A | Ultrasonic inspection device | Expired / Lapsed | 1950-10-21 | 1954-11-02 | 0 | Details |
| US2682767A | Means for amplifying resonance reaction signals in frequenc… | Expired / Lapsed | 1951-07-27 | 1954-07-06 | 0 | Details |
| US2682766A | Ultrasonic inspection device | Expired / Lapsed | 1950-08-17 | 1954-07-06 | 0 | Details |
| US2672753A | Rail flaw detector mechanism | Expired / Lapsed | 1949-09-17 | 1954-03-23 | 0 | Details |
| US2667780A | Ultrasonic inspection device | Expired / Lapsed | 1951-07-26 | 1954-02-02 | 0 | Details |
| US2660054A | Ultrasonic thickness measuring device | Expired / Lapsed | 1951-12-07 | 1953-11-24 | 0 | Details |
| US2657319A | Ultrasonic beam shaping device | Expired / Lapsed | 1950-06-15 | 1953-10-27 | 0 | Details |
| US2649550A | Reflection absorbing ultrasonic wedge | Expired / Lapsed | 1950-10-26 | 1953-08-18 | 0 | Details |
| US2646555A | Means for increasing the brightness of a cathode tube displ… | Expired / Lapsed | 1950-08-03 | 1953-07-21 | 0 | Details |
| US2628335A | Ultrasonic rail flaw detector search unit | Expired / Lapsed | 1950-08-10 | 1953-02-10 | 0 | Details |
| US2602102A | Variable angle ultrasonic transducer | Expired / Lapsed | 1950-04-13 | 1952-07-01 | 0 | Details |
| US2602101A | Variable angle ultrasonic transducer | Expired / Lapsed | 1950-02-21 | 1952-07-01 | 0 | Details |
| US2601779A | Means for generating supersonic waves | Expired / Lapsed | 1946-05-10 | 1952-07-01 | 0 | Details |
| US2592135A | Inspecting solid parts by supersonic shear waves | Expired / Lapsed | 1945-06-28 | 1952-04-08 | 0 | Details |
| US2592134A | Method of supersonic inspection | Expired / Lapsed | 1945-06-28 | 1952-04-08 | 0 | Details |
| US2565725A | Supersonic inspection for flaws lying near the surface of a… | Expired / Lapsed | 1946-05-21 | 1951-08-28 | 0 | Details |
| US2562450A | Pulse cutoff device | Expired / Lapsed | 1947-07-05 | 1951-07-31 | 0 | Details |
| US2550528A | Supersonic inspection | Expired / Lapsed | 1947-06-07 | 1951-04-24 | 0 | Details |
| US2540879A | Means for compensating for fluid loss in hydraulic transmis… | Expired / Lapsed | 1946-05-25 | 1951-02-06 | 0 | Details |
| US2536128A | Method and means for generating and utilizing vibrational w… | Expired / Lapsed | 1946-05-21 | 1951-01-02 | 0 | Details |
| US2534006A | Supersonic inspection device | Expired / Lapsed | 1946-06-01 | 1950-12-12 | 0 | Details |
| US2527986A | Supersonic testing | Expired / Lapsed | 1947-04-26 | 1950-10-31 | 0 | Details |
| US2525873A | Lens system for ultrasonic viewing of defects in objects | Expired / Lapsed | 1948-07-23 | 1950-10-17 | 0 | Details |
| US2525861A | Delay system for supersonic inspection | Expired / Lapsed | 1948-07-07 | 1950-10-17 | 0 | Details |
| US2499459A | Resonance device for inspecting materials | Expired / Lapsed | 1947-10-04 | 1950-03-07 | 0 | Details |
| US2494990A | Method and means for locating discontinuities by pulses of … | Expired / Lapsed | 1947-06-27 | 1950-01-17 | 0 | Details |
| US2483821A | Inspection of a solid part utilizing supersonic transmission | Expired / Lapsed | 1945-06-28 | 1949-10-04 | 0 | Details |
| US2467301A | Supersonic inspection for flaws lying near the surface of a… | Expired / Lapsed | 1945-07-23 | 1949-04-12 | 0 | Details |
| US2467306A | Flaw detector for tubing and the like | Expired / Lapsed | 1943-09-08 | 1949-04-12 | 0 | Details |
| US2458581A | Supersonic inspection | Expired / Lapsed | 1946-05-21 | 1949-01-11 | 0 | Details |
| US2448399A | Supersonic inspection | Expired / Lapsed | 1946-06-01 | 1948-08-31 | 0 | Details |
| US2448352A | Piezoelectric crystal mounting means | Expired / Lapsed | 1946-03-26 | 1948-08-31 | 0 | Details |
| US2448363A | Time marks for the sweep of cathode-ray tubes | Expired / Lapsed | 1945-06-28 | 1948-08-31 | 0 | Details |
| US2431862A | Means for supersonic inspection | Expired / Lapsed | 1946-03-26 | 1947-12-02 | 0 | Details |
| US2414302A | Liquid control gear | Expired / Lapsed | 1943-12-02 | 1947-01-14 | 0 | Details |
| US2409560A | Data transmitter | Expired / Lapsed | 1944-01-18 | 1946-10-15 | 0 | Details |
| US2409559A | Data transmitter | Expired / Lapsed | 1943-04-10 | 1946-10-15 | 0 | Details |
| US2391357A | Torpedo director | Expired / Lapsed | 1941-07-08 | 1945-12-18 | 0 | Details |
| US2352953A | Strain gauge | Expired / Lapsed | 1942-08-04 | 1944-07-04 | 0 | Details |
| US2346838A | Follow-up and compensating system | Expired / Lapsed | 1942-07-29 | 1944-04-18 | 0 | Details |
| US2346830A | Tube tester | Expired / Lapsed | 1940-10-10 | 1944-04-18 | 0 | Details |
| US2339359A | Apparatus for controlling sheet thickness in continuous str… | Expired / Lapsed | 1941-03-20 | 1944-01-18 | 0 | Details |
| US2336371A | Compensated strain gauge | Expired / Lapsed | 1940-02-24 | 1943-12-07 | 0 | Details |
| US2332288A | Compensating potentiometer | Expired / Lapsed | 1942-04-09 | 1943-10-19 | 0 | Details |
| US2322498A | Means for generating balancing signals | Expired / Lapsed | 1942-01-07 | 1943-06-22 | 0 | Details |
| US2322452A | Rail flaw detector mechanism | Expired / Lapsed | 1941-08-19 | 1943-06-22 | 0 | Details |
| US2297879A | Rail flaw detector mechanism | Expired / Lapsed | 1939-03-17 | 1942-10-06 | 0 | Details |
| US2266358A | Calibrating device for thermionic amplifiers | Expired / Lapsed | 1940-07-30 | 1941-12-16 | 0 | Details |
| US2218673A | Rail flaw detector mechanism | Expired / Lapsed | 1937-08-05 | 1940-10-22 | 0 | Details |
| US2215622A | Magnetic compass | Expired / Lapsed | 1936-07-30 | 1940-09-24 | 0 | Details |
| US2124411A | Flaw detector mechanism | Expired / Lapsed | 1933-11-17 | 1938-07-19 | 0 | Details |
| US2118105A | Track recorder mechanism | Expired / Lapsed | 1935-07-11 | 1938-05-24 | 0 | Details |
| US2113785A | Rail flaw detector mechanism | Expired / Lapsed | 1936-10-09 | 1938-04-12 | 0 | Details |
| US2108580A | Lubricant testing device | Expired / Lapsed | 1935-07-10 | 1938-02-15 | 0 | Details |
| US2103851A | Rail flaw detector mechanism | Expired / Lapsed | 1935-02-06 | 1937-12-28 | 0 | Details |
| US2094234A | Flaw detector for electrical conductors | Expired / Lapsed | 1936-06-04 | 1937-09-28 | 0 | Details |
| US2041526A | Gyro baseline | Expired / Lapsed | 1929-04-22 | 1936-05-19 | 0 | Details |
| US2027814A | Rail flaw detector car | Expired / Lapsed | 1933-11-04 | 1936-01-14 | 0 | Details |
| US1996906A | Method and means for detecting flaws in electrical conducto… | Expired / Lapsed | 1933-11-14 | 1935-04-09 | 0 | Details |
| US1955953A | Flaw detector car | Expired / Lapsed | 1932-01-09 | 1934-04-24 | 0 | Details |
| US1946196A | Method and means for detecting flaws | Expired / Lapsed | 1933-03-18 | 1934-02-06 | 0 | Details |
| US1933547A | Flaw detector for pipes | Expired / Lapsed | 1930-11-12 | 1933-11-07 | 0 | Details |
| US1907864A | Flaw detector for cables | Expired / Lapsed | 1930-12-13 | 1933-05-09 | 0 | Details |
| US1897610A | Flaw detector | Expired / Lapsed | 1931-12-30 | 1933-02-14 | 0 | Details |
| US1893074A | Flaw detector | Expired / Lapsed | 1929-06-18 | 1933-01-03 | 0 | Details |