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Everlasting Valve Co Inc

Everlastin

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2420849A	Valve	Expired / Lapsed	1943-09-25	1947-05-20	0	Details
US2383099A	Lubricated gate valve	Expired / Lapsed	1943-07-30	1945-08-21	0	Details
US1909480A	Method of producing wear rings	Expired / Lapsed	1931-06-18	1933-05-16	0	Details
US1253522A	Internal-combustion steam-generator.	Expired / Lapsed	1915-10-18	1918-01-15	0	Details