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1 result for “Owens-Corning Fiberglas”

1. Patent · August 18, 1942

   Pipe Fitting (US Patent 2,293,392, 1942)

   …1940. The patent's description opens (from the scanned text): This invention relates to pipe fittings and particularly to unitary fittings for making connections between a domestic hot water heater and a domestic hot water tank…