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MOTOR IMPROVEMENTS Inc

MOTOR IMPR

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2239868A	Filter	Expired / Lapsed	1938-10-27	1941-04-29	0	Details
US2218800A	Filter	Expired / Lapsed	1937-11-05	1940-10-22	0	Details
US2158512A	Filter	Expired / Lapsed	1937-08-19	1939-05-16	0	Details
US2042537A	Filter and method of making same	Expired / Lapsed	1931-02-06	1936-06-02	0	Details