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• Written by: Richard B. Steffens ×
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1 result for “Owens-Illinois”

1. Patent · August 4, 1942

   Duct Turn (US Patent 2,292,246, 1942)

   …1938. It was assigned to Philip Carey Manufacturing Co. The patent's description opens (from the scanned text): This invention relates to an insulating duct and particularly one made of non-metal material, such as asbestos…