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Return to Abstracts of Patents Return to Abstracts of Patents 500-749 Patent Abstracts613. ELWORTHY, H. S. Gas for Illuminating, Heating of Power Purposes. United States Patent 943,627, Dec. 14, 1909; appl. filed May 15, 1905. Gas rich in CH4 is made by destructively distilling carbonaceous material, separating thereform the hydrocarbons other than CH4, mixing water gas over metallic Ni at a suitable temperature for producing CH4 and H2O. |