Warren Steam Pump Co. v. Blake & Knowles Steam Pump Works
Court of Appeals for the First Circuit
Appeal from the Circuit Court of the United States for the District of Massachusetts.
1Opinion of the Court
COLT, Circuit Judge.
This bill was brought for the infringement of two patents for improvements in pumping engines, the Whiting & Wheeler patent, No. 526,913, dated October 2, 1834, and the Hall & Gage patent, No. 522,938, dated July 10, 1894. The application for the Whiting & Wheeler patent was filed January 18, 1892, and the application for the Hall & Gage patent was filed June 10, 1892. The Hall & Gage patent is for an "improvement on the Whiting & Wheeler structure. The Circuit Court held the patents valid, and that the defendant’s pumping engine infringed. The fundamental question upon…
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