Alberger Gas Engine Co. v. Ross Heater & Mfg. Co.

HAZED, District Judge.

In this case infringement is charged of complainant’s reissue patent No. 14,906, granted'July 6, 1920, to John A. Bogart, on application filed May 20, 1920, for an improvement in expansion joints, pursuant to original patent No. 1,319,457, of October 21, 1919, on application dated September 3, 1915. Defendants in answer challenge the validity of the reissue, deny infringement, and counterclaim that complainant infringes claims 1 and 2 of their patent No. 1,336,924, for expansion joint, of April 13, 1920, on application of March 10, 1915, which they say was a continuation…