CHICAGO TELEPHONE SUPPLY Co
CHICAGO TEActive Patents
0
Total Holdings
14
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2352454A | Tab mounting variable resistor | Expired / Lapsed | 1941-09-02 | 1944-06-27 | 0 | Details |
| US2177291A | Variable resistance device | Expired / Lapsed | 1939-02-02 | 1939-10-24 | 0 | Details |
| US2177288A | Switch terminal construction | Expired / Lapsed | 1937-11-26 | 1939-10-24 | 0 | Details |
| US2120651A | Variable resistance device | Expired / Lapsed | 1934-06-11 | 1938-06-14 | 0 | Details |
| US2082980A | Variable resistance | Expired / Lapsed | 1934-12-10 | 1937-06-08 | 0 | Details |
| US2082979A | Variable resistance device | Expired / Lapsed | 1934-05-28 | 1937-06-08 | 0 | Details |
| US2061106A | Resistance element | Expired / Lapsed | 1933-04-17 | 1936-11-17 | 0 | Details |
| US2059813A | Rheostat mounting | Expired / Lapsed | 1933-05-15 | 1936-11-03 | 0 | Details |
| US2041213A | Resistance element | Expired / Lapsed | 1934-11-26 | 1936-05-19 | 0 | Details |
| US2022481A | Circulating and mixing system | Expired / Lapsed | 1931-12-02 | 1935-11-26 | 0 | Details |
| US2019999A | Circuit controller | Expired / Lapsed | 1932-03-31 | 1935-11-05 | 0 | Details |
| US1949358A | Socket | Expired / Lapsed | 1929-02-23 | 1934-02-27 | 0 | Details |
| US1920217A | Rheostat | Expired / Lapsed | 1931-12-07 | 1933-08-01 | 0 | Details |
| US1781958A | Automatic plug | Expired / Lapsed | 1925-09-05 | 1930-11-18 | 0 | Details |