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Clayton Mark and Co

Clayton Ma

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2722360A	Apparatus for supporting and bracing ladders	Expired / Lapsed	1951-04-13	1955-11-01	0	Details
US2621605A	Pump	Expired / Lapsed	1945-10-12	1952-12-16	0	Details
US2489715A	Packing	Expired / Lapsed	1944-11-18	1949-11-29	0	Details
US2287540A	Surface welding	Expired / Lapsed	1940-08-12	1942-06-23	0	Details
US2188326A	Electric welding	Expired / Lapsed	1936-06-26	1940-01-30	0	Details