MR. JUSTICE BLATCHFORD delivered the opinion of the court.
This is a bill in equity filed in the Circuit Court of the United States for the Eastern District of Pennsylvania, by Isaac W. Heysinger, Christian H. Hershey, and J. Loren Heysinger, against James P. Crawford, founded on the alleged infringement of reissued letters-patent No. 9803, granted July 12, 1881, to George W. Heyl, assignee of Henry R. Heyl, the inventor, for an "improvement in devices for inserting...
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