1 result for “Owens-Corning Fiberglas”
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Patent · August 13, 1929
Machine for Making Sheet Products (US Patent 1,724,154, 1929)
…13, 1929, filed March 1, 1927. The patent's description opens (from the scanned text): Our invention relates to the manufacture of concrete sheets adapted, when finally set, to be used as roofing and siding, shingles…