Clarage Fan Co. v. B. F. Sturtevant Co.

FUCKS, Circuit Judge.

Suit by B. F. Sturtevant Company (herein called Sturtevant or appellee) against Clarage Fan Company (herein called Clarage or appellant) for infringement of patent No. 1,846,863 (herein called No. 863), for “Fan and Method of Operating the same” issued to Hagen, February 23, 1932, and for infringement of patent No. 1,989,413 (herein called No. 413) issued to Hagen, January 29, 1935, for a “Centrifugal Fan.”

In an amended complaint Sturtevant based its suit on claim 2 of No. 863 and the four claims of No. 413 and sought to hold Clarage bound from contesting these claims…