Claude Neon Electrical Products, Inc. v. Brilliant Tube Sign Co.

RUDKIN, Circuit Judge.

This was a suit for infringement of letters patent No. 1,125,476, dated January 19, 1915, covering improvements in a system of illuminating by luminescent tubes. The plaintiff is the owner and holder of the exclusive right and license to manufacture, use, and sell the patented device,-or devices, in certain western states, including the state of Washington. A later patent set forth in the complaint is not involved on the present appeal. The court below found that the patent was invalid because the alleged invention was not useful, and because the description of the…