Cammeyer v. Newton - 94 U.S. 225 (1876)
U.S. Supreme Court
Cammeyer v. Newton, 94 U.S. 225 (1876)
Cammeyer v. Newton
94 U.S. 225
1. This court finds that letters patent No. 80,492, granted to William H. Cammeyer, bearing date July 28, 1868, for an improved portable and adjustable still water dam, were not infringed by the defendant.
2. The claims embraced by the patent, and the nature and mode of operation of the invention which is therein described, and of the machine or apparatus used by the defendant in alleged violation of the patent, examined.