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Ross Operating Valve Co

Ross Opera

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US4227547A	Valve safety indicating means	Expired / Lapsed	1979-02-12	1980-10-14	5	Details
US3388638A	Piston	Expired / Lapsed	1966-03-02	1968-06-18	0	Details
US2859735A	Shiftable mechanism with momentarily actuated control	Expired / Lapsed	1955-03-18	1958-11-11	0	Details
US2300263A	Rapid operating valve	Expired / Lapsed	1940-02-16	1942-10-27	0	Details