Chemical Construction Corporation v. Jones & Laughlin Steel Corporation, Chemical Construction Corporation v. Jones & Laughlin Steel Corporation

SMITH, Circuit Judge.

These appeals are from a judgment entered in an action for the infringement of Patent No. 2,604,185, granted in July of 1952, on an application filed by Johnstone and Anthony in November of 1946, and assigned to the Pease-Anthony Equipment Company prior to the grant thereof. The patent and all rights thereunder were later assigned to the plaintiff. The only claims in issue in the trial of the action were 5, 6, 8 and 9, which were held invalid and, if valid, not infringed. We consider initially only the questions raised on the plaintiff’s appeal; the questions raised on…