Paul E. Hawkinson Co. v. Skogmo-Gamble, Inc.

BELL, District Judge.

This is an action in equity by Paul E. Hawkinson Company and its licensee, Hawkinson Tire Tread Service, Inc., both Minnesota corporations, against SkogmoGamble, Inc., and Gamble Stores, Incorporated, both Delaware corporations, engaged in business in the State of Minnesota, for infringement of letters patent No. 1,917,261, dated May 14, 1931, entitled “Method of Retreading Tire Casings,” and No. 1,917,262, dated December 20, 1932, entitled “Apparatus for Retreading Tire Casings.” The defendants deny the validity of the patents and infringement.

Many patents on methods and…