1 result for “Owens-Corning Fiberglas”
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Patent · June 10, 1930
Flat Asbestos Cement Roofing & Wall Sheet (US Patent 1,763,469, 1930)
…1928. The patent's description opens (from the scanned text): My invention relates to an improvement in the manufacture of flat asbestos-cement roofing and Walling sheets of a form to be applied directly to the…