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Houston Oil Field Material Co Inc

Houston Oi

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US3360960A	Helical grooved tubular drill string	Expired / Lapsed	1966-02-16	1968-01-02	2	Details
US2622126A	Conformable coil	Expired / Lapsed	1948-09-20	1952-12-16	0	Details
US2622125A	Expansible coil for testing material	Expired / Lapsed	1948-09-20	1952-12-16	0	Details
US2389985A	Retractable packer	Expired / Lapsed	1941-05-23	1945-11-27	0	Details