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Start Over You searched for: Subjects Intellectual Property Remove constraint Subjects: Intellectual Property Publication Year 1800 to 1899 Remove constraint Publication Year: <span class="from" data-blrl-begin="1800">1800</span> to <span class="to" data-blrl-end="1899">1899</span>

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9. Discovery by the late Dr. Horace Wells of the applicability of nitrous oxyd gas, sulphuric ether and other vapors in surgical operations: nearly two years before the patented discovery of Drs. Charles T. Jackson and W.T.G. Morton