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    Chemical patents index ; a comprehensive and detailed index of the subject matter of specification and claims of United States patents and patent reissues granted during the decenn... by Worden, Edward Chauncey 1875-1940

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    Chemical patents index ; a comprehensive and detailed index of the subject matter of specification and claims of United States patents and patent reissues granted during the decennial period 1915-1924 inclusive, covering the entire field of chemical technology ; comprising the ramifications of patented inorganic and organic chemical processes and products as applied to biology, microscopy, botany, mineralogy, pharmacy, medicine, photography and dyestuffs in both the warlike and peaceful arts

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