HOLMES ELECTRIC PROTECTIVE CO
HOLMES ELEActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2992420A | Capacity type burglar alarm systems | Expired / Lapsed | 1957-11-08 | 1961-07-11 | 0 | Details |
| US2779936A | Supervisory unit for burglar alarm system | Expired / Lapsed | 1955-03-21 | 1957-01-29 | 0 | Details |
| US2749537A | Device for detecting motion in a confined space | Expired / Lapsed | 1955-03-21 | 1956-06-05 | 0 | Details |
| US2129261A | Burglar alarm system | Expired / Lapsed | 1936-05-02 | 1938-09-06 | 0 | Details |
| US1919007A | Signaling system | Expired / Lapsed | 1931-08-21 | 1933-07-18 | 0 | Details |
| US1521793A | Alarm device | Expired / Lapsed | 1922-07-31 | 1925-01-06 | 0 | Details |