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1 result for “Owens-Illinois”

1. Patent · October 30, 1934

   Acoustical Construction (US Patent 1,978,632, 1934)

   …1934, filed January 25, 1932. It was assigned to Johns Manville. The patent's description opens (from the scanned text): The present invention relates to improvements in acoustical construction, and particularly to such a construction units.