MR. JUSTICE BLATCHFORD delivered the opinion of the court.
This is a suit in equity, brought in the Circuit Court of the United States for the Northern District of Illinois, by Hugh Graham against Cyrus H. McCormick, Leander J. McCormick, and Robert H. McCormick, on the 8th of June, 1877, founded on the alleged infringement of letters patent No. 74,342, granted to Alvaro B. Graham, February 11, 1868, for an "improvement in harvesters." In the course of the suit the...
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