1 result for “Owens-Illinois”
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Patent · January 3, 1933
Refined Magnesia Product from Mineral Sources of Magnesia (US Patent 1,893,047, 1933)
…1930. It was assigned to Dolomite Inc. The patent's description opens (from the scanned text): This invention relates to the treatment of natural mineral sources of magnesmm and calcium compounds, such as dolomite and magnesian…