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MACCLATCHIE Manufacturing Co OF CAL

MACCLATCHI

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2320975A	Piston	Expired / Lapsed	1941-12-30	1943-06-01	0	Details
US2182899A	Packer	Expired / Lapsed	1936-11-25	1939-12-12	0	Details
US2178876A	Valve	Expired / Lapsed	1937-05-28	1939-11-07	0	Details
US2129433A	Blow-out preventer	Expired / Lapsed	1936-08-18	1938-09-06	0	Details