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Westinghouse Electric Elevator Co

Westinghou

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2121588A	Motor control system	Expired / Lapsed	1937-01-16	1938-06-21	0	Details
US2103805A	Control system for electric motors	Expired / Lapsed	1936-11-07	1937-12-28	0	Details
US1973096A	Elevator dispatching system	Expired / Lapsed	1925-09-09	1934-09-11	0	Details
US1934508A	Elevator safety	Expired / Lapsed	1932-02-06	1933-11-07	0	Details
US1822152A	Selenium cell door closer	Expired / Lapsed	1929-01-18	1931-09-08	0	Details