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WALWORTH PATENTS Inc

WALWORTH P

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2352140A	Power-operated valve	Expired / Lapsed	1942-03-28	1944-06-20	0	Details
US2342422A	High pressure joint	Expired / Lapsed	1942-05-05	1944-02-22	0	Details
US2265526A	Lubricating device	Expired / Lapsed	1939-04-01	1941-12-09	0	Details
US2175867A	Valve	Expired / Lapsed	1937-01-15	1939-10-10	0	Details
US1931918A	Check valve	Expired / Lapsed	1926-08-20	1933-10-24	0	Details