1 result for “Owens-Corning Fiberglas”
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Patent · May 2, 1939
Asbestos Cement Shingle (US Patent 2,156,310, 1939)
…1939, filed January 23, 1936. The patent's description opens (from the scanned text): The present invention relates to low density shingles and, more particularly, to a low density asbestos cement shingle of improved character and…