ILLINOIS TESTING LABORATORIES
ILLINOIS TActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3076338A | Pulsed resistance thermometers | Expired / Lapsed | 1959-07-22 | 1963-02-05 | 2 | Details |
| US2982880A | Apparatus for operation of gasfilled multicathode character… | Expired / Lapsed | 1960-02-01 | 1961-05-02 | 0 | Details |
| US2872556A | Heater control circuits | Expired / Lapsed | 1957-07-23 | 1959-02-03 | 0 | Details |
| US2612780A | Resistance thermometer | Expired / Lapsed | 1947-07-19 | 1952-10-07 | 0 | Details |
| US2447232A | Circuit for obtaining pulsating current output as a functio… | Expired / Lapsed | 1947-05-02 | 1948-08-17 | 0 | Details |
| US2341526A | Amplifying and detecting system | Expired / Lapsed | 1939-07-08 | 1944-02-15 | 0 | Details |
| US2315185A | Air velocity meter | Expired / Lapsed | 1937-07-22 | 1943-03-30 | 0 | Details |
| US2138593A | Thermal controlling device | Expired / Lapsed | 1936-09-28 | 1938-11-29 | 0 | Details |