Sinclair Refining Co. v. Martin & Schwartz, Inc.

KNIGHT, District Judge.

This action is brought to restrain the defendant from further infringing the rights claimed to be secured to the plaintiff by letters patent No. 1,948,191 covering certain improvements relating to a price indicator, and to recover damages suffered by reason of the alleged infringement by the defendant. The defenses are noninfringement, invalidity of the patent over the prior art, and misconduct of the plaintiff in the course of the prosecution of the application to the final grant of the patent.

Claim 4 of the patent reads as follows : “In apparatus of the class…