1. McClain v. Ortmayer, No. 44., SUPREME COURT OF THE UNITED STATES, Argued October 20, 21, 1891. , November 2, 1891, Decided
OVERVIEW: There was no patent infringement where alleged infringer did not use all of the elements of the original patented device to attach sweat pads to horse collars, and where second patent consisted of a change too minor to be a valid patent.
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