2 results for “Owens-Corning Fiberglas”
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Patent · October 31, 1939
Fibrous Cementitious Tubes (US Patent 2,177,643, 1939)
…October 31, 1939, filed January 12, 1938. The patent's description opens (from the scanned text): The invention relates to a method of manufacturing tubes of a composition material, such. as asbestos and cement, or pulp…
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Patent · May 2, 1939
Method of Treating Composition Boards (US Patent 2,156,382, 1939)
…1939, filed February 17, 1937. The patent's description opens (from the scanned text): The invention relates to a method of and means for treating composition material and particularly concerns a method of drying, painting, and…