Burroughs Adding Mach. Co. v. Rockford Milling Mach. Co.

AESCHUEER, Circuit Judge.

The action was at law, begun by the predecessor of plaintiff in error for alleged infringement of certain claims of United States patent No. 1,336,904, to Hopkins, through the making by defendants in error of machines under later patent to Sundstrand, No. 1,198,487. At the close of plaintiff’s testimony, on'motion of defendants, the court directed verdict in defendants’ favor on the ground of noninfringement, and gave the judgment here in question.

Application for the Plopkins patent was filed April -9, 1906, and patent issued April 30, 1920. The Sundstrand application…