Opinion · Supreme Court of the United States

National Brake & Electric Co. v. Christensen

41 S. Ct. 154

Type
Opinion
Court
Supreme Court of the United States
Jurisdiction
Federal
Date
1920-04-27
Topic
general

Mr. Justice Day delivered the opinion of the court. Suit was brought by Christensen and the Allis-Chalmers Company in the District Court of the United States for *427 the Eastern District of Wisconsin against the National Brake & Electric Company for infringement of patent to Christensen No. 635,280 for improvement in a combined pump and motor; . After answer, the petition was amended so as to set up that Christensen before the issue of the patent No. 635,280 had obtained a patent for the same invention under No. 621,324, and that because of defects the same had been returned to the Commissioner of Patents, and the new letters issued for the same invention, and that the Commissioner of Patents cancelled letters patent No. 621,324 and issued letters patent No. 635,280 for the full term of 17 years from October 17,1899. In the amended bill ,it was prayed -that the patent monopoly to Christensen be adjudged to be valid for 17 years from March 21, 1899, the date of the first patent, and the second letters patent be held by the court to be evidence of the grant for the term of 17 years from that date.

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