2 results for “Owens-Illinois”
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Patent · January 11, 1944
Causticizing of Waste Magnesia Products (US Patent 2,338,886, 1944)
…It was assigned to Johns Manville. The patent's description opens (from the scanned text): This invention relates to basic magnesium carbonate compositions of the type suitable for insulating purposes in the form of pipe coverings…
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Patent · October 7, 1947
Magnesia Insulation (US Patent 2,428,555, 1947)
…1943. It was assigned to Johns Manville. The patent's description opens (from the scanned text): This invention relates to the manufacture of magnesia insulation, and is particularly directed to improvements in method and apparatus whereby…