Texaco Inc
Texaco IncActive Patents
0
Total Holdings
179
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US5415048A | Acoustic gas-liquid flow meter | Expired / Lapsed | 1994-06-27 | 1995-05-16 | 5 | Details |
| US5401282A | Partial oxidation process for producing a stream of hot pur… | Expired / Lapsed | 1993-06-17 | 1995-03-28 | 31 | Details |
| US5169559A | Method for forming a high viscosity gel | Expired / Lapsed | 1991-12-26 | 1992-12-08 | 5 | Details |
| US5076361A | Gel method for decreasing permeability around a wellbore | Expired / Lapsed | 1990-09-07 | 1991-12-31 | 25 | Details |
| US5014010A | Dual frequency microwave water cut monitoring means and met… | Expired / Lapsed | 1989-04-10 | 1991-05-07 | 16 | Details |
| US4977319A | Method for determining oil content of an underground format… | Expired / Lapsed | 1989-02-03 | 1990-12-11 | 10 | Details |
| US4884457A | Means and method for monitoring the flow of a multi-phase p… | Expired / Lapsed | 1989-03-23 | 1989-12-05 | 16 | Details |
| US4760742A | Multi-phase petroleum stream monitoring system and method | Expired / Lapsed | 1987-04-10 | 1988-08-02 | 11 | Details |
| US4688418A | Method and apparatus for determining mass flow rate and qua… | Expired / Lapsed | 1985-10-17 | 1987-08-25 | 2 | Details |
| US4599088A | Clear stable gasoline-alcohol-water motor fuel composition | Expired / Lapsed | 1984-08-30 | 1986-07-08 | 25 | Details |
| US4568355A | Clear stable gasoline composition | Expired / Lapsed | 1985-06-03 | 1986-02-04 | 24 | Details |
| US4499418A | Water cut monitoring means and method | Expired / Lapsed | 1982-08-05 | 1985-02-12 | 5 | Details |
| US4323876A | Method for reducing multiple events in a seismic record | Expired / Lapsed | 1973-01-29 | 1982-04-06 | 23 | Details |
| US4289020A | Microwave-gamma ray water in crude monitor | Expired / Lapsed | 1979-12-26 | 1981-09-15 | 11 | Details |
| US4202167A | Process for producing power | Expired / Lapsed | 1979-03-08 | 1980-05-13 | 6 | Details |
| US4192767A | Aqueous surfactant solutions and oil-in-water emulsions | Expired / Lapsed | 1978-07-24 | 1980-03-11 | 13 | Details |
| US4176543A | Sonic leak detector and method | Expired / Lapsed | 1978-11-17 | 1979-12-04 | 14 | Details |
| US4152290A | Solution for transporting hydrocarbons in a pipeline | Expired / Lapsed | 1977-08-24 | 1979-05-01 | 8 | Details |
| US4141393A | Sealable fuel dispensing nozzle with automatic low-flow shu… | Expired / Lapsed | 1976-07-02 | 1979-02-27 | 4 | Details |
| US4133355A | Sealable dispensing nozzle with automatic shut-off | Expired / Lapsed | 1977-12-02 | 1979-01-09 | 5 | Details |
| US4099537A | Method for transportation of viscous hydrocarbons by pipeli… | Expired / Lapsed | 1976-03-08 | 1978-07-11 | 4 | Details |
| US4098585A | Amine-alkenylsuccinic acid or anhydride reaction product | Expired / Lapsed | 1976-06-07 | 1978-07-04 | 35 | Details |
| US4048080A | Lubricating oil composition | Expired / Lapsed | 1976-06-07 | 1977-09-13 | 16 | Details |
| US4048635A | Seismic playback/monitor system | Expired / Lapsed | 1975-09-15 | 1977-09-13 | 7 | Details |
| US4044602A | Consistometer with internal calibration means | Expired / Lapsed | 1976-09-01 | 1977-08-30 | 5 | Details |
| US4020342A | Earth formation salinity by comparison of inelastic and cap… | Expired / Lapsed | 1975-12-22 | 1977-04-26 | 11 | Details |
| US3947664A | Highly accurate odometer | Expired / Lapsed | 1974-01-02 | 1976-03-30 | 5 | Details |
| US3909422A | Method for removing elemental sulfur in sour gas wells | Expired / Lapsed | 1972-12-18 | 1975-09-30 | 8 | Details |
| US3872465A | Seismic playback/monitor system | Expired / Lapsed | 1973-04-27 | 1975-03-18 | 18 | Details |
| US3838076A | Polyurethane foams from partially aminated polyether polyols | Expired / Lapsed | 1973-03-12 | 1974-09-24 | 0 | Details |
| US3805857A | Vaporizable fuel transfer system and seal therefor | Expired / Lapsed | 1972-11-17 | 1974-04-23 | 7 | Details |
| US3806451A | Method for the treatment of scale | Expired / Lapsed | 1971-09-22 | 1974-04-23 | 0 | Details |
| US3800832A | Air gun firing assembly | Expired / Lapsed | 1972-02-09 | 1974-04-02 | 8 | Details |
| US3801816A | Well logging system and method | Expired / Lapsed | 1971-05-25 | 1974-04-02 | 13 | Details |
| US3792110A | Dehydrogenation process for converting n-paraffin hydrocarb… | Expired / Lapsed | 1971-12-29 | 1974-02-12 | 0 | Details |
| US3778694A | Electric motor control system for a beam-type pumping load | Expired / Lapsed | 1972-06-05 | 1973-12-11 | 5 | Details |
| US3733473A | Means and method for controlling the strength of acid in an… | Expired / Lapsed | 1971-08-05 | 1973-05-15 | 6 | Details |
| US3727012A | Calibrating a carrier erase magnetic tape analog recording … | Expired / Lapsed | 1971-11-19 | 1973-04-10 | 3 | Details |
| US3685046A | Seismic playback/monitor system | Expired / Lapsed | 1970-06-02 | 1972-08-15 | 16 | Details |
| US3673398A | Seismic playback system | Expired / Lapsed | 1971-06-30 | 1972-06-27 | 11 | Details |
| US3666788A | Cyanoalkylated polyoxyalkylene polyamines | Expired / Lapsed | 1969-08-22 | 1972-05-30 | 8 | Details |
| US3625655A | Acid analyzer | Expired / Lapsed | 1969-12-02 | 1971-12-07 | 0 | Details |
| US3610779A | Methods and systems for controlling pumping wells | Expired / Lapsed | 1967-12-22 | 1971-10-05 | 5 | Details |
| US3603972A | Amplifier system | Expired / Lapsed | 1968-12-24 | 1971-09-07 | 72 | Details |
| US3596249A | Credit card reader for sensing density of resilient material | Expired / Lapsed | 1969-12-31 | 1971-07-27 | 9 | Details |
| US3548271A | Nuclear well logging electronic circuit for the surface con… | Expired / Lapsed | 1968-07-29 | 1970-12-15 | 0 | Details |
| US3499488A | Secondary oil recovery process using steam | Expired / Lapsed | 1967-11-30 | 1970-03-10 | 0 | Details |
| US3495950A | Catalytic muffler construction for exhaust emissions contro… | Expired / Lapsed | 1964-05-20 | 1970-02-17 | 0 | Details |
| US3454871A | Apparatus for measuring and controlling spark advance of in… | Expired / Lapsed | 1968-02-19 | 1969-07-08 | 0 | Details |
| US3440512A | Electric motor control system for a beam type pumping load | Expired / Lapsed | 1965-12-28 | 1969-04-22 | 0 | Details |
| US3414635A | Hydroxyalkyl esters in surface coatings | Expired / Lapsed | 1965-10-18 | 1968-12-03 | 2 | Details |
| US3413535A | Electric motor control utilizing zener diode and integratin… | Expired / Lapsed | 1965-10-15 | 1968-11-26 | 0 | Details |
| US3399215A | Purification of p-dioxenes by azeotropic distillation with … | Expired / Lapsed | 1967-11-13 | 1968-08-27 | 0 | Details |
| US3362979A | Mixtures of methylene-bridged polyphenyl polyisocyanates | Expired / Lapsed | 1964-05-22 | 1968-01-09 | 0 | Details |
| US3362783A | Treatment of exhaust gases | Expired / Lapsed | 1963-12-23 | 1968-01-09 | 1 | Details |
| US3344162A | Preparation of aromatic polyisocyanates | Expired / Lapsed | 1964-01-02 | 1967-09-26 | 2 | Details |
| US3338302A | Control system for sub-sea apparatus | Expired / Lapsed | 1964-08-24 | 1967-08-29 | 2 | Details |
| US3311876A | Well logging | Expired / Lapsed | 1959-09-28 | 1967-03-28 | 2 | Details |
| US3304766A | Method for measuring two-phase fluid flow | Expired / Lapsed | 1964-01-17 | 1967-02-21 | 2 | Details |
| US3264477A | Epithermal neutron well logging | Expired / Lapsed | 1962-03-30 | 1966-08-02 | 2 | Details |
| US3247377A | Scintillation-type well logging device with two crystals re… | Expired / Lapsed | 1962-04-12 | 1966-04-19 | 2 | Details |
| US3231619A | Basic primary amino polyether compositions | Expired / Lapsed | 1959-12-18 | 1966-01-25 | 2 | Details |
| US3177940A | Method for obtaining fresh water from brine | Expired / Lapsed | 1962-03-27 | 1965-04-13 | 2 | Details |
| US3155657A | Process for the production of polyglycolamine and morpholine | Expired / Lapsed | 1961-07-20 | 1964-11-03 | 2 | Details |
| US3155728A | Method for the preparation of polyglycol primary amine | Expired / Lapsed | 1960-10-11 | 1964-11-03 | 2 | Details |
| US3149490A | Well logging apparatus | Expired / Lapsed | 1958-10-09 | 1964-09-22 | 2 | Details |
| US3147154A | Method of depositing metal-containing material onto an exte… | Expired / Lapsed | 1961-05-25 | 1964-09-01 | 3 | Details |
| US3134069A | Well logging apparatus having detector means in a rotatable… | Expired / Lapsed | 1959-01-30 | 1964-05-19 | 1 | Details |
| US3118127A | Acoustical velocity well logging | Expired / Lapsed | 1959-09-28 | 1964-01-14 | 2 | Details |
| US3115579A | Radioactivity well logging for carbon determination | Expired / Lapsed | 1957-01-07 | 1963-12-24 | 2 | Details |
| US3113290A | Acoustical well logging | Expired / Lapsed | 1959-12-03 | 1963-12-03 | 1 | Details |
| US3102992A | Simultaneous plural spacing acoustical logging | Expired / Lapsed | 1959-09-28 | 1963-09-03 | 2 | Details |
| US3090031A | Signal transmission system | Expired / Lapsed | 1959-09-29 | 1963-05-14 | 2 | Details |
| US3081636A | Apparatus for measuring volume of oil in a mixture | Expired / Lapsed | 1959-05-22 | 1963-03-19 | 2 | Details |
| US3079866A | Modified centrifugal pump | Expired / Lapsed | 1959-07-16 | 1963-03-05 | 2 | Details |
| US3071203A | Acoustical velocity well logging | Expired / Lapsed | 1959-09-28 | 1963-01-01 | 2 | Details |
| US3048699A | Method and apparatus for measuring absorption spectra | Expired / Lapsed | 1958-05-15 | 1962-08-07 | 0 | Details |
| US3030308A | Antifreeze composition | Expired / Lapsed | 1958-05-28 | 1962-04-17 | 2 | Details |
| US3025125A | Method and apparatus for photographing oscilloscopic sweep … | Expired / Lapsed | 1957-08-06 | 1962-03-13 | 0 | Details |
| US3024643A | Apparatus and method for continuously determining viscosity | Expired / Lapsed | 1957-03-20 | 1962-03-13 | 0 | Details |
| US3016960A | Radioactivity geophysical exploration | Expired / Lapsed | 1957-08-13 | 1962-01-16 | 0 | Details |
| US3013470A | Wedge structure for a double beam spectrophotometer | Expired / Lapsed | 1958-07-31 | 1961-12-19 | 0 | Details |
| US2967292A | Data processing method and apparatus | Expired / Lapsed | 1955-09-06 | 1961-01-03 | 0 | Details |
| US2961013A | Positive displacement type fluid filling machine having aut… | Expired / Lapsed | 1958-04-28 | 1960-11-22 | 0 | Details |
| US2947931A | Motor control systems | Expired / Lapsed | 1956-12-24 | 1960-08-02 | 0 | Details |
| US2938119A | Radioactivity analysis | Expired / Lapsed | 1956-10-08 | 1960-05-24 | 2 | Details |
| US2936375A | Radioactivity bore hole logging | Expired / Lapsed | 1955-12-27 | 1960-05-10 | 2 | Details |
| US2931455A | Acoustic logging of wells | Expired / Lapsed | 1956-03-29 | 1960-04-05 | 0 | Details |
| US2929221A | Method and apparatus for the transportation of liquefied pe… | Expired / Lapsed | 1956-10-09 | 1960-03-22 | 0 | Details |
| US2927078A | Prevention of paraffin deposition | Expired / Lapsed | 1957-01-29 | 1960-03-01 | 2 | Details |
| US2922484A | Geophysical exploration | Expired / Lapsed | 1956-06-25 | 1960-01-26 | 0 | Details |
| US2887881A | Pressure measuring apparatus | Expired / Lapsed | 1956-03-09 | 1959-05-26 | 0 | Details |
| US2865463A | Determination of propagation characteristics of earth forma… | Expired / Lapsed | 1956-01-19 | 1958-12-23 | 0 | Details |
| US2862836A | In situ polyamide coating method | Expired / Lapsed | 1955-03-14 | 1958-12-02 | 2 | Details |
| US2836359A | Integration of electrical signals | Expired / Lapsed | 1954-11-01 | 1958-05-27 | 1 | Details |
| US2830883A | Gasification of sulfur-bearing carbonaceous fuels | Expired / Lapsed | 1954-04-29 | 1958-04-15 | 2 | Details |
| US2817635A | Prevention of paraffin deposition and plugging | Expired / Lapsed | 1954-07-27 | 1957-12-24 | 2 | Details |
| US2799640A | Spark discharge activated chemical reactions | Expired / Lapsed | 1953-12-31 | 1957-07-16 | 2 | Details |
| US2791902A | Automatic and continuously recording viscosimeters | Expired / Lapsed | 1953-08-27 | 1957-05-14 | 0 | Details |
| US2783449A | Seismic velocity measurement | Expired / Lapsed | 1953-08-28 | 1957-02-26 | 0 | Details |
| US2761977A | Determining the nature of earth formations | Expired / Lapsed | 1952-03-28 | 1956-09-04 | 1 | Details |
| US2741705A | Radioactive well logging | Expired / Lapsed | 1951-01-30 | 1956-04-10 | 1 | Details |
| US2737804A | Relative permeability measurements | Expired / Lapsed | 1951-06-13 | 1956-03-13 | 2 | Details |
| US2724963A | Determination of effective nonwetting phase permeability | Expired / Lapsed | 1951-06-02 | 1955-11-29 | 2 | Details |
| US2692949A | Combination radioactivity borehole logging | Expired / Lapsed | 1951-12-29 | 1954-10-26 | 0 | Details |
| US2676660A | Corrosion prevention of offshore well tubing | Expired / Lapsed | 1950-02-24 | 1954-04-27 | 0 | Details |
| US2670442A | Radioactivity borehole logging apparatus | Expired / Lapsed | 1950-04-25 | 1954-02-23 | 2 | Details |
| US2656470A | Prospecting | Expired / Lapsed | 1951-03-19 | 1953-10-20 | 1 | Details |
| US2644891A | Method of neutron borehole logging | Expired / Lapsed | 1950-03-28 | 1953-07-07 | 2 | Details |
| US2638402A | Seismic prospecting | Expired / Lapsed | 1947-06-09 | 1953-05-12 | 0 | Details |
| US2620890A | Seismic prospecting | Expired / Lapsed | 1947-12-01 | 1952-12-09 | 0 | Details |
| US2617945A | Prospecting using gamma ray detection | Expired / Lapsed | 1948-03-09 | 1952-11-11 | 2 | Details |
| US2580636A | Reflection seismic exploration | Expired / Lapsed | 1945-03-01 | 1952-01-01 | 0 | Details |
| US2569510A | Electrical analogues | Expired / Lapsed | 1947-12-15 | 1951-10-02 | 0 | Details |
| US2567057A | Chemical analysis using neutrons | Expired / Lapsed | 1948-08-02 | 1951-09-04 | 2 | Details |
| US2557636A | Amplifying and pulse selecting circuit for radiation detect… | Expired / Lapsed | 1946-06-12 | 1951-06-19 | 0 | Details |
| US2534346A | Internal-combustion engine | Expired / Lapsed | 1943-12-23 | 1950-12-19 | 0 | Details |
| US2499953A | Linear integration meter | Expired / Lapsed | 1944-05-27 | 1950-03-07 | 0 | Details |
| US2484009A | Internal-combustion engine and method of operating same | Expired / Lapsed | 1948-02-25 | 1949-10-11 | 0 | Details |
| US2483139A | Method and apparatus for logging boreholes | Expired / Lapsed | 1943-12-31 | 1949-09-27 | 0 | Details |
| US2481014A | Method and apparatus for radioactivity well logging | Expired / Lapsed | 1945-03-22 | 1949-09-06 | 0 | Details |
| US2473129A | Method of carrying out exothermic reactions | Expired / Lapsed | 1945-02-16 | 1949-06-14 | 0 | Details |
| US2456233A | Liquid level measurement and control | Expired / Lapsed | 1944-08-26 | 1948-12-14 | 0 | Details |
| US2454869A | Alkylation method | Expired / Lapsed | 1943-02-24 | 1948-11-30 | 0 | Details |
| US2450265A | Method of logging boreholes | Expired / Lapsed | 1944-04-04 | 1948-09-28 | 0 | Details |
| US2443857A | Circuits for the control of radiation detectors | Expired / Lapsed | 1945-04-24 | 1948-06-22 | 0 | Details |
| US2443673A | Method of effecting catalytic conversions | Expired / Lapsed | 1944-05-03 | 1948-06-22 | 0 | Details |
| US2443680A | Method of determining the nature of substrata | Expired / Lapsed | 1944-04-04 | 1948-06-22 | 0 | Details |
| US2433554A | Well logging apparatus | Expired / Lapsed | 1942-10-27 | 1947-12-30 | 0 | Details |
| US2425533A | Device for measuring wall thickness | Expired / Lapsed | 1945-11-21 | 1947-08-12 | 0 | Details |
| US2425512A | Measurement of thickness | Expired / Lapsed | 1945-11-21 | 1947-08-12 | 0 | Details |
| US2418892A | Radiation detector quenching circuit | Expired / Lapsed | 1945-04-24 | 1947-04-15 | 0 | Details |
| US2409544A | Alkylation of hydrocarbons | Expired / Lapsed | 1942-04-17 | 1946-10-15 | 0 | Details |
| US2384323A | Aliphatic-ether-alcohol derivatives of cashew nut shell oil | Expired / Lapsed | 1943-03-26 | 1945-09-04 | 0 | Details |
| US2382279A | Device for recovering a radiation source | Expired / Lapsed | 1943-11-27 | 1945-08-14 | 0 | Details |
| US2382262A | Method of treating pipe lines | Expired / Lapsed | 1941-11-18 | 1945-08-14 | 0 | Details |
| US2381256A | Process for treating hydrocarbon fractions | Expired / Lapsed | 1942-10-06 | 1945-08-07 | 0 | Details |
| US2378408A | Method and apparatus for logging boreholes | Expired / Lapsed | 1942-09-30 | 1945-06-19 | 0 | Details |
| US2378219A | Method and apparatus for determining liquid level | Expired / Lapsed | 1943-11-16 | 1945-06-12 | 0 | Details |
| US2374313A | Treatment of hydrocarbons | Expired / Lapsed | 1942-01-08 | 1945-04-24 | 0 | Details |
| US2372461A | Apparatus for placing gravel in wells | Expired / Lapsed | 1942-03-26 | 1945-03-27 | 0 | Details |
| US2370163A | Method and apparatus for examining opaque material | Expired / Lapsed | 1941-10-16 | 1945-02-27 | 0 | Details |
| US2370162A | Method and apparatus for logging boreholes | Expired / Lapsed | 1941-10-16 | 1945-02-27 | 0 | Details |
| US2369672A | Method and apparatus for logging boreholes | Expired / Lapsed | 1941-10-21 | 1945-02-20 | 0 | Details |
| US2352433A | Well logging | Expired / Lapsed | 1943-02-12 | 1944-06-27 | 0 | Details |
| US2348810A | Method and apparatus for determining liquid level | Expired / Lapsed | 1940-05-29 | 1944-05-16 | 0 | Details |
| US2346486A | Method and apparatus for measuring thickness | Expired / Lapsed | 1941-10-07 | 1944-04-11 | 0 | Details |
| US2334239A | Stabilizfd grease composition | Expired / Lapsed | 1941-12-30 | 1943-11-16 | 0 | Details |
| US2334270A | Plywood binder | Expired / Lapsed | 1941-11-19 | 1943-11-16 | 0 | Details |
| US2323128A | Method and apparatus for determining liquid level | Expired / Lapsed | 1941-09-10 | 1943-06-29 | 0 | Details |
| US2316239A | Method and apparatus for determining density of fluids | Expired / Lapsed | 1941-08-20 | 1943-04-13 | 0 | Details |
| US2312862A | Method and apparatus for completing wells | Expired / Lapsed | 1940-01-26 | 1943-03-02 | 0 | Details |
| US2296754A | Astatic electromagnetic vibration detector | Expired / Lapsed | 1939-04-29 | 1942-09-22 | 0 | Details |
| US2296035A | Dye applicator | Expired / Lapsed | 1940-07-31 | 1942-09-15 | 0 | Details |
| US2289351A | Method of cleaning heater tubes | Expired / Lapsed | 1939-04-06 | 1942-07-14 | 0 | Details |
| US2286618A | Refrigerating process | Expired / Lapsed | 1939-11-03 | 1942-06-16 | 0 | Details |
| US2277756A | Method and apparatus for measuring thickness | Expired / Lapsed | 1940-06-26 | 1942-03-31 | 0 | Details |
| US2274292A | Refrigerating system | Expired / Lapsed | 1938-03-01 | 1942-02-24 | 0 | Details |
| US2229566A | Method and apparatus for conditioning fibrous material | Expired / Lapsed | 1938-05-14 | 1941-01-21 | 0 | Details |
| US2211747A | Combination polymerization and alkylation of hydrocarbons | Expired / Lapsed | 1938-04-21 | 1940-08-13 | 0 | Details |
| US2205994A | Manufacture of polyvalent metal soaps | Expired / Lapsed | 1937-12-18 | 1940-06-25 | 0 | Details |
| US2164764A | Method of making metal covered gaskets | Expired / Lapsed | 1935-11-30 | 1939-07-04 | 0 | Details |
| US2147578A | Sulphurized lubricant | Expired / Lapsed | 1936-01-30 | 1939-02-14 | 0 | Details |
| US2147606A | Method of and apparatus for gas analysis | Expired / Lapsed | 1934-04-05 | 1939-02-14 | 0 | Details |
| US2143233A | Apparatus for indicating and recording contours of interior… | Expired / Lapsed | 1937-12-21 | 1939-01-10 | 0 | Details |
| US2120132A | Method and apparatus for cleaning wells | Expired / Lapsed | 1936-12-23 | 1938-06-07 | 0 | Details |
| US2104385A | Radiator cleaning composition | Expired / Lapsed | 1934-08-27 | 1938-01-04 | 0 | Details |
| US2099155A | Liquid display device | Expired / Lapsed | 1936-06-11 | 1937-11-16 | 0 | Details |
| US2089790A | Method of forming a rolled joint | Expired / Lapsed | 1935-07-24 | 1937-08-10 | 0 | Details |
| US2064489A | Vibration detector | Expired / Lapsed | 1932-05-26 | 1936-12-15 | 0 | Details |
| US2045898A | Advertising display device | Expired / Lapsed | 1935-04-12 | 1936-06-30 | 0 | Details |
| US2005316A | Apparatus for fractionating hydrocarbon oil vapor | Expired / Lapsed | 1932-06-15 | 1935-06-18 | 0 | Details |
| US1957259A | Lubricant | Expired / Lapsed | 1932-02-18 | 1934-05-01 | 0 | Details |
| US1928282A | Dehydrating oils | Expired / Lapsed | 1929-01-30 | 1933-09-26 | 0 | Details |
| US1909205A | Seismic method of profiling geologic formations | Expired / Lapsed | 1931-03-05 | 1933-05-16 | 0 | Details |
| US1873454A | Method for distilling oils | Expired / Lapsed | 1928-07-12 | 1932-08-23 | 0 | Details |
| US1863522A | Viscosimeter | Expired / Lapsed | 1930-01-15 | 1932-06-14 | 0 | Details |
| US1738565A | Method and apparatus for utilizing high-frequency sound wav… | Expired / Lapsed | 1927-07-18 | 1929-12-10 | 0 | Details |
| US1566790A | Can manufacture | Expired / Lapsed | 1923-04-13 | 1925-12-22 | 0 | Details |