Stromberg Carlson Telephone Manufacturing Co
StrombergActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2261822A | Telephone switchboard | Expired / Lapsed | 1940-03-13 | 1941-11-04 | 0 | Details |
| US2241156A | Selecting system | Expired / Lapsed | 1938-01-25 | 1941-05-06 | 0 | Details |
| US2205272A | Remotely controlled radio receiving system | Expired / Lapsed | 1938-06-11 | 1940-06-18 | 0 | Details |
| US1992327A | Time controlled radio receiving system | Expired / Lapsed | 1931-02-06 | 1935-02-26 | 0 | Details |
| US1873879A | Combined mechanical and electrical radio station selector | Expired / Lapsed | 1929-07-12 | 1932-08-23 | 0 | Details |
| US1642684A | Vacuum-tube socket | Expired / Lapsed | 1925-08-26 | 1927-09-20 | 0 | Details |