Bristol Co
Bristol CoActive Patents
0
Total Holdings
54
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2836153A | Pilot valve | Expired / Lapsed | 1954-08-24 | 1958-05-27 | 0 | Details |
| US2816562A | Adjustable proportionating spring assembly and control syst… | Expired / Lapsed | 1954-01-05 | 1957-12-17 | 0 | Details |
| US2780760A | Servo system with quick-action response | Expired / Lapsed | 1953-07-02 | 1957-02-05 | 0 | Details |
| US2780242A | Relay valve | Expired / Lapsed | 1952-12-11 | 1957-02-05 | 0 | Details |
| US2691889A | Plural zone measuring bridge | Expired / Lapsed | 1949-04-26 | 1954-10-19 | 0 | Details |
| US2677093A | Detector for direct-current potentials | Expired / Lapsed | 1948-10-06 | 1954-04-27 | 0 | Details |
| US2665607A | Cloud-data recorder | Expired / Lapsed | 1945-07-21 | 1954-01-12 | 0 | Details |
| US2628149A | Multiple-point measuring instrument | Expired / Lapsed | 1948-08-17 | 1953-02-10 | 0 | Details |
| US2627750A | Differential pressure indicating device | Expired / Lapsed | 1947-01-24 | 1953-02-10 | 0 | Details |
| US2607223A | Apparatus for measuring rate of fluid flow | Expired / Lapsed | 1947-08-28 | 1952-08-19 | 0 | Details |
| US2566053A | Temperature control apparatus | Expired / Lapsed | 1946-10-17 | 1951-08-28 | 0 | Details |
| US2560829A | Temperature responsive circuit selector | Expired / Lapsed | 1945-10-08 | 1951-07-17 | 0 | Details |
| US2516952A | Insulated thermocouple with metallic coating | Expired / Lapsed | 1945-07-12 | 1950-08-01 | 0 | Details |
| US2477835A | Thermometric apparatus | Expired / Lapsed | 1944-10-19 | 1949-08-02 | 0 | Details |
| US2465191A | Self-balancing telemetric receiver | Expired / Lapsed | 1944-11-27 | 1949-03-22 | 0 | Details |
| US2458683A | Sequence control | Expired / Lapsed | 1943-01-07 | 1949-01-11 | 0 | Details |
| US2447321A | Electrical detector network | Expired / Lapsed | 1945-06-09 | 1948-08-17 | 0 | Details |
| US2444726A | Method and apparatus for determining the magnitude of a con… | Expired / Lapsed | 1944-02-05 | 1948-07-06 | 0 | Details |
| US2442835A | Process cycle controller | Expired / Lapsed | 1941-01-21 | 1948-06-08 | 0 | Details |
| US2441882A | Seal for differential pressure apparatus | Expired / Lapsed | 1943-04-20 | 1948-05-18 | 0 | Details |
| US2439096A | Electric motor control system | Expired / Lapsed | 1943-09-29 | 1948-04-06 | 0 | Details |
| US2414221A | Multiple record apparatus | Expired / Lapsed | 1942-08-05 | 1947-01-14 | 0 | Details |
| US2390301A | Pneumatic telemetering system | Expired / Lapsed | 1942-01-16 | 1945-12-04 | 0 | Details |
| US2374610A | Control apparatus | Expired / Lapsed | 1942-06-02 | 1945-04-24 | 0 | Details |
| US2368701A | Galvanometer | Expired / Lapsed | 1943-07-07 | 1945-02-06 | 0 | Details |
| US2367087A | Seal for differential pressure gauges | Expired / Lapsed | 1942-02-16 | 1945-01-09 | 0 | Details |
| US2335633A | Recording means | Expired / Lapsed | 1942-05-07 | 1943-11-30 | 0 | Details |
| US2329400A | Tachometer | Expired / Lapsed | 1942-01-21 | 1943-09-14 | 0 | Details |
| US2326217A | Thermometer bulb mounting | Expired / Lapsed | 1941-10-01 | 1943-08-10 | 0 | Details |
| US2326200A | Telemetric apparatus | Expired / Lapsed | 1941-01-08 | 1943-08-10 | 0 | Details |
| US2326239A | Electrothermally operated circuit controller | Expired / Lapsed | 1940-11-05 | 1943-08-10 | 0 | Details |
| US2325103A | Fluid-pressure-actuated regulating system | Expired / Lapsed | 1937-11-15 | 1943-07-27 | 0 | Details |
| US2320066A | Self-balancing circuit mechanism | Expired / Lapsed | 1940-10-29 | 1943-05-25 | 0 | Details |
| US2214159A | Impulse transmitter for telemetering systems | Expired / Lapsed | 1939-04-06 | 1940-09-10 | 0 | Details |
| US2207908A | Metering and integrating apparatus | Expired / Lapsed | 1938-10-01 | 1940-07-16 | 0 | Details |
| US2170418A | Automatic control system | Expired / Lapsed | 1937-09-03 | 1939-08-22 | 0 | Details |
| US2153986A | Electronic control system for selfbalancing measuring instr… | Expired / Lapsed | 1937-11-15 | 1939-04-11 | 0 | Details |
| US2125345A | Multiple-recording instrument | Expired / Lapsed | 1936-02-25 | 1938-08-02 | 0 | Details |
| US2115528A | Control apparatus | Expired / Lapsed | 1936-08-06 | 1938-04-26 | 0 | Details |
| US2114330A | Compensated potential divider for potentiometers | Expired / Lapsed | 1934-06-29 | 1938-04-19 | 0 | Details |
| US2088032A | Fully-compensated remote-reading thermometer | Expired / Lapsed | 1935-07-24 | 1937-07-27 | 0 | Details |
| US2078763A | Pen-arm mounting | Expired / Lapsed | 1936-05-19 | 1937-04-27 | 0 | Details |
| US2062437A | Control system having stabilizing and anticipatory features | Expired / Lapsed | 1935-09-14 | 1936-12-01 | 0 | Details |
| US2040918A | Telemetering device | Expired / Lapsed | 1934-09-14 | 1936-05-19 | 0 | Details |
| US2015855A | Automatic control system | Expired / Lapsed | 1934-09-27 | 1935-10-01 | 0 | Details |
| US2015838A | Temperature measuring and/or control apparatus | Expired / Lapsed | 1933-12-05 | 1935-10-01 | 0 | Details |
| US1987200A | Control mechanism | Expired / Lapsed | 1934-01-02 | 1935-01-08 | 0 | Details |
| US1979311A | System of measurement and control | Expired / Lapsed | 1933-05-02 | 1934-11-06 | 0 | Details |
| US1962324A | Measuring apparatus | Expired / Lapsed | 1932-07-15 | 1934-06-12 | 0 | Details |
| US1904615A | Fitting for measuring elements | Expired / Lapsed | 1931-10-01 | 1933-04-18 | 0 | Details |
| US1431627A | Remote control system | Expired / Lapsed | 1919-03-18 | 1922-10-10 | 0 | Details |
| US1287860A | Measuring instrument. | Expired / Lapsed | 1917-11-12 | 1918-12-17 | 0 | Details |
| US1234170A | Synchronizing apparatus. | Expired / Lapsed | 1916-12-14 | 1917-07-24 | 0 | Details |
| US1098472A | Indicating and recording hygrometer. | Expired / Lapsed | 1910-10-19 | 1914-06-02 | 0 | Details |