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UNION SWITCH & SIGNAL CO. v. LOUISVILLE FROG, ETC., CO.

No. 6390.

73 F.2d 550 (1934)

UNION SWITCH & SIGNAL CO. v. LOUISVILLE FROG, SWITCH & SIGNAL CO.

Circuit Court of Appeals, Sixth Circuit.

November 16, 1934.

Attorney(s) appearing for the Case

Henry R. Ashton, of New York City (Charles Neave, of New York City, and A. L. Vencill, of Swissvale, Pa., on the brief), for appellant.

David P. Wolhaupter, of Washington, D. C., for appellee.

Before MOORMAN, HICKS, and SIMONS, Circuit Judges.

HICKS, Circuit Judge.

The patent in suit is reissue No. 17,252 issued April 2, 1929, to Snavely and Wells and assigned to appellant. The original patent, No. 1,676,466, was granted July 10, 1928, for an electrical relay, designed primarily for use in operating a flashing signal light for warning at railroad grade crossings. The defenses were invalidity as a reissue, lack of invention, and noninfringement. The District Court decreed that the patent was invalid as a...

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