Stewart-Warner Corp. v. Rogers

BIGGS, Circuit Judge.

The appeals at bar are limited to a consideration of claims 2, 3 and 5 of United States Patent No. 1,475,980, issued on December 4, 1923 to Oscar Zerk for a lubricating apparatus. The appeals at bar are further limited by the charge made by Stewart-Warner Corporation, the appellant in each cause, that the appellees have been guilty of contributory infringement of Zerk’s patent by manufacturing and selling nipples or fittings of the kind described in the Zerk patent with the knowledge and intention that such nipples would be used with the appellant’s compressors having…