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DE FOREST RADIO TEL. & TEL. CO. v. WESTINGHOUSE E. & MFG. CO.

No. 3125.

13 F.2d 1014 (1924)

DE FOREST RADIO TELEPHONE & TELEGRAPH CO. v. WESTINGHOUSE ELECTRIC & MFG. CO.

District Court, E. D. Pennsylvania.

June term, 1924.

Attorney(s) appearing for the Case

Samuel E. Darby, Jr., of New York City, Thomas G. Haight, of Jersey City, N. J., and Francis B. Bracken, of Philadelphia, Pa., for plaintiff.

Thomas Ewing, Drury W. Cooper, and H. Frank Wiegand, all of New York City, and Howson & Howson, of Philadelphia, Pa., for defendant.

THOMPSON, District Judge.

This is a suit in equity brought by the plaintiff as assignee of patents Nos. 1,507,016 and 1,507,017, both granted September 2, 1924, to Lee De Forest, against the defendant as assignee of patent No. 1,113,149, granted October 6, 1914, to Edwin H. Armstrong. The bill alleges that the plaintiff's patents and the defendant's patent are interfering patents within the meaning of section 4918, R. S. (Comp. St. § 9463), in that the invention...

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