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James B Clow & Sons

James B Cl

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2389463A	Pipe-cutting machine	Expired / Lapsed	1944-01-24	1945-11-20	0	Details
US2240979A	Valve	Expired / Lapsed	1938-03-11	1941-05-06	0	Details
US2233223A	Test plug	Expired / Lapsed	1938-03-11	1941-02-25	0	Details
US2099722A	Pipe joint	Expired / Lapsed	1936-01-02	1937-11-23	0	Details
US943838A	Valve device.	Expired / Lapsed	1908-07-20	1909-12-21	0	Details