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• Decade: 1930s ×
• Written by: Ernest J. Maust ×
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1 result for “Owens-Corning Fiberglas”

1. Patent · August 16, 1932

   Cement Asbestos Products (US Patent 1,872,480, 1932)

   …1931. It was assigned to Dorr Co. The patent's description opens (from the scanned text): This invention relates to a method of and means for making products of mixed materials, such as asbestos and cement…