Court of Appeals for the Ninth Circuit January 14, 1929, 5529 (Metals Recovery Co. v. Anaconda Copper Min. Co.)

DIETRICH, Circuit Judge.

As the holder of patent No. 1,364,304 (issued January 4, 1921, to Clement L. Perkins on application filed July 21, 1919), appellant brought this suit to enjoin infringement. The patent relates to “improvements in flotation of minerals.” See Hyde v. Minerals Separation, Ltd. (C. C. A.) 214 F. 100; Minerals Separation v. Hyde, 242 U. S. 261, 37 S. Ct. 82, 61 L. Ed.