1 result for “Owens-Corning Fiberglas”
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Patent · March 31, 1970
Foamed polystyrene bonded to fiber filled polyvinyl chloride sheet (US Patent 3,503,841, 1970)
…on March 31, 1970, filed May 13, 1966. It was assigned to WR Grace and Co. The patent's description opens: This invention relates to light weight sandwich structures containing foamed or cellular plastic core material.