Automatic Electric Co
AutomaticActive Patents
0
Total Holdings
9
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US1556905A | Automatic calling device | Expired / Lapsed | 1921-10-18 | 1925-10-13 | 0 | Details |
| US1554999A | Automatic telephone system | Expired / Lapsed | 1922-10-27 | 1925-09-29 | 0 | Details |
| US1540786A | Telephone system | Expired / Lapsed | 1923-01-11 | 1925-06-09 | 0 | Details |
| US1414686A | Call indicator for automatic telephone systems | Expired / Lapsed | 1916-07-10 | 1922-05-02 | 0 | Details |
| US1349381A | Automatic telephone system | Expired / Lapsed | 1918-03-25 | 1920-08-10 | 0 | Details |
| US1342256A | Relay | Expired / Lapsed | 1919-08-09 | 1920-06-01 | 0 | Details |
| US1227523A | Phonographic time-announcer. | Expired / Lapsed | 1913-07-07 | 1917-05-22 | 0 | Details |
| US1209253A | Impulse-transmitting device. | Expired / Lapsed | 1913-01-09 | 1916-12-19 | 0 | Details |
| US1196876A | Automatic telephone and supervisory system. | Expired / Lapsed | 1907-11-30 | 1916-09-05 | 0 | Details |