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Chemical Construction Corp

Chemical C

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US3699683A	Engine exhaust emission control system	Expired / Lapsed	1971-04-05	1972-10-24	10	Details
US2767083A	Use of nucleating agents in the reduction of salts to metal	Expired / Lapsed	1953-12-23	1956-10-16	2	Details
US2655431A	Sulfuric acid production by absorption	Expired / Lapsed	1949-01-21	1953-10-13	2	Details
US1923866A	Sulphur bearing ore furnace	Expired / Lapsed	1929-10-26	1933-08-22	0	Details