Spencer Turbine Co

Spencer Tu

Active Patents

Total Holdings

Patent Holdings

Patent No.	Title	Status	Filing Date	Grant Date	Actions
US2316981A	Article recovering implement	Expired / Lapsed	1942-11-30	1943-04-20	Details
US2035400A	Vacuum cleaner	Expired / Lapsed	1933-02-01	1936-03-24	Details
US1487038A	Device for controlling valve movements in pressure apparatus	Expired / Lapsed	1920-01-05	1924-03-18	Details