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Grigsby Grunow Co

Grigsby Gr

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US1968302A	Control mechanism	Expired / Lapsed	1928-09-14	1934-07-31	0	Details
US1944138A	Electrical apparatus	Expired / Lapsed	1931-01-12	1934-01-16	0	Details
US1935371A	Electrical apparatus	Expired / Lapsed	1930-07-12	1933-11-14	0	Details
US1860348A	Radioreceiver	Expired / Lapsed	1928-05-28	1932-05-31	0	Details
US1852877A	Talking machine	Expired / Lapsed	1926-06-23	1932-04-05	0	Details