Sarkes Tarzian, Inc., Cross-Appellee v. Philco Corporation and Radio Equipment Company, Inc., Cross-Appellants

DUFFY, Circuit Judge.

The complaint herein charged infringement of sixteen claims of Krepps Patent No. 2,665,377, entitled “Universal Tuning System for Television Receivers.” The patent in suit contained twenty-three claims.

The Krepps patent relates to a VHF tuner which is capable of selectively receiving VHF television channels 2 to 13, inclusive. By means of extra switch positions the tuner may be adapted to cooperate with any preceding UHF tuning device that the set might contain. The patent explains that the tuner can func tion with a preceding UHF tuner, either as a single superheterodyne…