Tibbetts Industries, Inc. And George C. Tibbetts v. Knowles Electronics, Inc. And Hugh S. Knowles

HASTINGS, Chief Judge.

The precise question for decision on this appeal can be best stated after a brief summary of the prior proceedings had in the United States Patent Office, and thereafter.

George C. Tibbetts and Hugh S. Knowles each filed separate applications in the United States Patent Office for a patent, stated in general terms, on a means of magnetically balancing the motor of a microphone or receiver. The Tibbetts application, serial No. 690,753, was filed August 28, 1957. The Knowles application, serial No. 730,082, was filed April 22, 1958.

The respective patent applications were…