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Cities Service Oil Co

Cities Ser

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2431632A	Heater for high temperature reactions and conversions	Expired / Lapsed	1943-05-27	1947-11-25	0	Details
US2423844A	Timepiece lubricant	Expired / Lapsed	1945-10-18	1947-07-15	0	Details
US2362767A	Lubricants	Expired / Lapsed	1942-06-03	1944-11-14	0	Details
US2243219A	Porous refractory and process of manufacture	Expired / Lapsed	1938-06-25	1941-05-27	0	Details