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HAZELTINE RESEARCH, INC. v. FIRESTONE TIRE & RUBBER CO.

Nos. 71-2140, 71-2141.

468 F.2d 1277 (1972)

HAZELTINE RESEARCH, INC., Appellant Cross-Appellee, v. FIRESTONE TIRE AND RUBBER COMPANY, Appellee Cross-Appellant. HAZELTINE RESEARCH, INC., Appellee Cross-Appellant, v. FIRESTONE TIRE AND RUBBER COMPANY, Appellant Cross-Appellee.

United States Court of Appeals, Fourth Circuit.

Decided November 15, 1972.

Attorney(s) appearing for the Case

Laurence B. Dodds, Great Neck, N. Y. (Woods, Rogers, Muse, Walker & Thornton, and Leonard G. Muse, Roanoke, Va., on brief), for Hazeltine Research, Inc.

Thomas M. Ferrill, Jr., Blue Bell, Pa. (Allen V. Hazeltine, Blue Bell, Pa., Herbert Epstein, Philadelphia, Pa., E. Griffith Dodson, Jr., and Dodson, Pence, Coulter, Viar, & Young, Roanoke, Va., on brief), for Firestone Tire and Rubber Co.

Before BOREMAN, Senior Circuit Judge, and WINTER and RUSSELL, Circuit Judges.

BOREMAN, Senior Circuit Judge:

This is an appeal by Hazeltine Research, Inc., from a decision by the district court holding one of Hazeltine's patents (Richman Patent No. 2,933,558, hereafter "Richman 558") valid, but not infringed by a somewhat similar electronic circuit used in Philco television receivers, which receivers are sold by the Firestone Tire and Rubber Company.

The invention, including Claim 1 of Richman...

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