Neon Signal Devices, Inc. v. Alpha-Claude Neon Corp.

THOMSON, District Judge.

This litigation arises over letters patent No. 1806429, dated May 12, 1931, granted on the application of the inventor, William B. MeG-ill, to Neon Signal Devices, Inc., as assignee, covering a certain improvement in traffic signals.

The bill alleges infringement and prays for an injunction restraining the defendant from the manufacture, sale, or use of the patented device. The validity of the patent is not controverted, but infringement is denied because defendant claims it possesses an irrevocable, equitable license or shop right to manufacture, use, and sell the…