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American Rock Wool Corp

American R

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2317895A	Means for and method of manufacturing mineral wool products…	Expired / Lapsed	1941-03-03	1943-04-27	0	Details
US2178871A	Process for producing fibrous material	Expired / Lapsed	1937-03-19	1939-11-07	0	Details
US2163567A	Bonded fibrous insulating material	Expired / Lapsed	1937-08-27	1939-06-20	0	Details
US2103769A	Method of and means for forming felted strips	Expired / Lapsed	1935-07-05	1937-12-28	0	Details