MR. JUSTICE BLATCHFORD delivered the opinion of the court.
This is a suit in equity brought for the alleged infringement of reissued letters-patent No. 6673, granted to Mrs. P. Duff, E.A. Kitzmiller, and R.P. Duff, Oct. 5, 1875, for an "improvement in wash-boards," on the surrender of original letters-patent No. 111,585, granted to Westly Todd, as inventor, Feb. 7, 1871. The specification of the reissue says: "The nature of my invention consists in the construction...
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