SERVO CORPORATION OF AMERICA v. GENERAL ELECTRIC COMPANY

Nos. 11208, 11209.

393 F.2d 551 (1968)

SERVO CORPORATION OF AMERICA, Appellant, v. GENERAL ELECTRIC COMPANY, Appellee.

United States Court of Appeals Fourth Circuit.

Decided March 14, 1968.


Attorney(s) appearing for the Case

John S. Davenport, III, Richmond, Va. (William R. Cogar, Collins Denny, III, Mays, Valentine, Davenport & Moore, Richmond, Va., B. Purnell Eggleston, Roanoke, Va., and Roy C. Hopgood, New York City, on brief), for Servo Corp. of America.

Charles H. Walker, New York City (David W. Plant, Fish, Richardson & Neave, George V. Eltgroth, New York City, Melvin M. Goldenberg, Washington, D. C., Frank W. Rogers, Leonard C. Muse, and Woods, Rogers, Muse, Walker & Thornton, Roanoke, Va., on brief), for General Electric Co.

Before HAYNSWORTH, Chief Judge, and BRYAN and WINTER, Circuit Judges.


WINTER, Circuit Judge:

As more particularly set out in Servo Corporation of America v. General Electric Company, 337 F.2d 716 (4 Cir. 1964), we held U. S. Patents Nos. 2,880,309 and 2,903,575, of which Servo was the assignee, invalid and, hence, incapable of infringement by General Electric. The patents were for devices known as "hot box detectors," useful in the railroad industry to detect an abnormal quantity of heat emanating from...

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