Ruben Condenser Co. v. Copeland Refrigeration Corp.

L. HAND, Circuit Judge.

This appeal comes up from a decree for the plaintiffs in a suit in equity enjoining the infringement of claims 2, 5, 6, 7 and 8 of patent No. 1,710,073, issued to Samuel Ruben on April 23, 1929; and of claims 4, 5, 6 and 7 of patent No. 1,714,191, issued to the same person on May 21, 1929. The second of these was applied for first, but the disclosure of the other is more complete and we shall confine our attention to it. The invention is for an electric condenser, to be used in a self-starter on motor cars, in radio sets and the like; it is of the dry electrolytic type,…