Otis Elevator Co
Otis ElevaActive Patents
0
Total Holdings
23
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US5207295A | Lightweight prefabricated elevator cab | Expired / Lapsed | 1991-10-01 | 1993-05-04 | 16 | Details |
| US4870334A | Motor control apparatus | Expired / Lapsed | 1987-08-21 | 1989-09-26 | 9 | Details |
| US4434884A | Spiral escalator | Expired / Lapsed | 1983-07-01 | 1984-03-06 | 2 | Details |
| US3631942A | Elevator cab structure | Expired / Lapsed | 1970-07-14 | 1972-01-04 | 13 | Details |
| US3311995A | Adaptive training device | Expired / Lapsed | 1963-03-18 | 1967-04-04 | 1 | Details |
| US3280397A | Industrial truck | Expired / Lapsed | 1964-03-25 | 1966-10-18 | 2 | Details |
| US2699226A | Elevator control system | Expired / Lapsed | 1952-06-14 | 1955-01-11 | 0 | Details |
| US2525767A | Control for electric circuits | Expired / Lapsed | 1945-07-10 | 1950-10-17 | 0 | Details |
| US2336106A | Motor control system | Expired / Lapsed | 1942-08-25 | 1943-12-07 | 0 | Details |
| US1911015A | Elevator control system | Expired / Lapsed | 1930-01-16 | 1933-05-23 | 0 | Details |
| US1890752A | Switching mechanism | Expired / Lapsed | 1930-12-23 | 1932-12-13 | 0 | Details |
| US1888486A | Service indicating system for elevators | Expired / Lapsed | 1925-06-26 | 1932-11-22 | 0 | Details |
| US1887209A | Elevator system | Expired / Lapsed | 1930-05-06 | 1932-11-08 | 0 | Details |
| US1141928A | Elevating baggage-truck. | Expired / Lapsed | 1913-01-15 | 1915-06-08 | 0 | Details |
| US1120708A | Current-controlling apparatus. | Expired / Lapsed | 1907-06-11 | 1914-12-15 | 0 | Details |
| US1112784A | Means for controlling electric currents. | Expired / Lapsed | 1905-12-18 | 1914-10-06 | 0 | Details |
| US1052528A | Inductive controlling apparatus. | Expired / Lapsed | 1910-03-01 | 1913-02-11 | 0 | Details |
| US1041642A | Brake apparatus. | Expired / Lapsed | 1911-04-05 | 1912-10-15 | 0 | Details |
| US1000107A | Conveyer. | Expired / Lapsed | 1911-02-13 | 1911-08-08 | 0 | Details |
| US1000106A | Car-haul. | Expired / Lapsed | 1911-02-13 | 1911-08-08 | 0 | Details |
| US986277A | Motor-control system. | Expired / Lapsed | 1910-06-20 | 1911-03-07 | 0 | Details |
| US962268A | Chain-gear steering apparatus. | Expired / Lapsed | 1908-01-18 | 1910-06-21 | 0 | Details |
| US907985A | Push-button-controlled plunger-elevator system. | Expired / Lapsed | 1906-04-25 | 1908-12-29 | 0 | Details |