US Filter Wallace and Tiernan Inc
US FilterActive Patents
0
Total Holdings
30
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3214422A | Crosslinking polyethylene | Expired / Lapsed | 1959-08-28 | 1965-10-26 | 2 | Details |
| US3133440A | Stabilizing apparatus for floats for variable flow meters | Expired / Lapsed | 1960-09-14 | 1964-05-19 | 2 | Details |
| US3095745A | Differential pressure instrument | Expired / Lapsed | 1959-05-28 | 1963-07-02 | 2 | Details |
| US2929393A | Gas flow control apparatus | Expired / Lapsed | 1957-03-21 | 1960-03-22 | 0 | Details |
| US2771772A | Apparatus for measuring the mass rate of flow | Expired / Lapsed | 1953-04-13 | 1956-11-27 | 0 | Details |
| US2585060A | Electrical cell apparatus for testing liquids | Expired / Lapsed | 1948-03-05 | 1952-02-12 | 0 | Details |
| US2571271A | Sterilization of ion exchange bodies | Expired / Lapsed | 1948-01-20 | 1951-10-16 | 1 | Details |
| US2560317A | Method of determining the concentration of a chemical const… | Expired / Lapsed | 1946-02-27 | 1951-07-10 | 2 | Details |
| US2396934A | Detection of the chemical condition of materials | Expired / Lapsed | 1940-08-03 | 1946-03-19 | 0 | Details |
| US2382735A | Electrical cell apparatus | Expired / Lapsed | 1941-04-24 | 1945-08-14 | 0 | Details |
| US2370871A | Chlorine detection by electrode depolarization | Expired / Lapsed | 1942-02-07 | 1945-03-06 | 0 | Details |
| US2368905A | Aneroid barometer movement | Expired / Lapsed | 1941-09-24 | 1945-02-06 | 0 | Details |
| US2354086A | Radiometeorograph receiving relay apparatus | Expired / Lapsed | 1941-09-30 | 1944-07-18 | 0 | Details |
| US2350378A | Method and system of apparatus for detecting and controllin… | Expired / Lapsed | 1939-08-18 | 1944-06-06 | 0 | Details |
| US2347345A | Radiometeorograph transmitting apparatus | Expired / Lapsed | 1941-12-31 | 1944-04-25 | 0 | Details |
| US2347160A | Radiometeorograph transmitting apparatus | Expired / Lapsed | 1940-04-04 | 1944-04-18 | 0 | Details |
| US2341810A | Color comparator | Expired / Lapsed | 1941-09-30 | 1944-02-15 | 0 | Details |
| US2336492A | Proportional control system | Expired / Lapsed | 1939-12-26 | 1943-12-14 | 0 | Details |
| US2336994A | Proportional control system and procedure | Expired / Lapsed | 1938-12-05 | 1943-12-14 | 0 | Details |
| US2299529A | Apparatus for controlling the condition of material | Expired / Lapsed | 1937-06-10 | 1942-10-20 | 0 | Details |
| US2284476A | Voltmeter apparatus | Expired / Lapsed | 1938-05-31 | 1942-05-26 | 0 | Details |
| US2258575A | Lamp changing apparatus | Expired / Lapsed | 1938-02-15 | 1941-10-07 | 0 | Details |
| US2234349A | Motor control apparatus | Expired / Lapsed | 1936-04-17 | 1941-03-11 | 0 | Details |
| US2222218A | Synchronous selector apparatus | Expired / Lapsed | 1936-12-18 | 1940-11-19 | 0 | Details |
| US2204225A | Method of and means for purifying water | Expired / Lapsed | 1936-06-27 | 1940-06-11 | 0 | Details |
| US2165062A | Communicating system | Expired / Lapsed | 1935-03-19 | 1939-07-04 | 0 | Details |
| US2097850A | Sealing joint and method of making the same | Expired / Lapsed | 1935-08-10 | 1937-11-02 | 0 | Details |
| US2011171A | Electrolyzing apparatus | Expired / Lapsed | 1931-04-10 | 1935-08-13 | 0 | Details |
| US1995270A | Electric motor | Expired / Lapsed | 1933-06-10 | 1935-03-19 | 0 | Details |
| US1964228A | Vernier telemetric system | Expired / Lapsed | 1929-04-20 | 1934-06-26 | 0 | Details |