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Gulf Research and Development Co

Gulf Resea

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2884624A	Pipeline surveying	Expired / Lapsed	1956-06-28	1959-04-28	0	Details
US2774108A	Method of making low-resistance ion-exchange membranes	Expired / Lapsed	1952-09-16	1956-12-18	2	Details
US2267356A	Apparatus for and method of seismograph recording	Expired / Lapsed	1940-01-16	1941-12-23	0	Details
US2233825A	Pump	Expired / Lapsed	1939-08-04	1941-03-04	0	Details