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Start Over Subjects Anesthetics, Inhalation ✖Remove constraint Subjects: Anesthetics, Inhalation Titles Before the Commissioner of Patents, in the matter of extension of letters patent of the United States, granted to William T.G. Morton, on the 12th day of November, 1946, for "An improvement in surgical operations": statement and account, pursuant to section eighteen of the Act of Congress, passed July 4, 1836 ✖Remove constraint Titles: Before the Commissioner of Patents, in the matter of extension of letters patent of the United States, granted to William T.G. Morton, on the 12th day of November, 1946, for "An improvement in surgical operations": statement and account, pursuant to section eighteen of the Act of Congress, passed July 4, 1836

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  • Before the Commissioner of Patents, in the matter of extension of letters patent of the United States, granted to William T.G. Morton, on the 12th day of November, 1946, for "An improvement in surgical operations": statement and account, pursuant to section eighteen of the Act of Congress, passed July 4, 18361