Automatic Electric Inc
AutomaticActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US1738931A | Zone metering system | Expired / Lapsed | 1926-02-12 | 1929-12-10 | 0 | Details |
| US1721640A | Automatic telephone system | Expired / Lapsed | 1925-03-26 | 1929-07-23 | 0 | Details |
| US1718914A | Telephone system | Expired / Lapsed | 1926-06-18 | 1929-06-25 | 0 | Details |
| US1681039A | Automatic telephone trunking system | Expired / Lapsed | 1919-12-27 | 1928-08-14 | 0 | Details |
| US1674411A | Traffic-recording equipment for telephone systems | Expired / Lapsed | 1924-04-18 | 1928-06-19 | 0 | Details |
| US1674127A | Remote control system | Expired / Lapsed | 1923-05-17 | 1928-06-19 | 0 | Details |
| US1673420A | Automatic telephone system | Expired / Lapsed | 1925-02-20 | 1928-06-12 | 0 | Details |
| US1633116A | Telephone system | Expired / Lapsed | 1923-02-16 | 1927-06-21 | 0 | Details |