1 result for “Owens-Corning Fiberglas”
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Patent · September 2, 1930
Insulating Covering for Fittings (US Patent 1,774,732, 1930)
…on September 2, 1930, filed September 14, 1927. The patent's description opens (from the scanned text): My invention relates to pipe fittings, anged or otherwise, such as are used in heating systems, and it has…