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PATROL VALVE CO. v. ROBERTSHAW-FULTON CONTROLS CO.

No. 11747.

210 F.2d 146 (1954)

PATROL VALVE CO. v. ROBERTSHAW-FULTON CONTROLS CO.

United States Court of Appeals Sixth Circuit.

February 10, 1954.

Attorney(s) appearing for the Case

Frank D. Eaman, Detroit, Mich., F. O. Richey, Cleveland, Ohio, F. B. Schramm, H. F. Schneider, Richey, Watts, Edgerton & McNenny, Cleveland, Ohio, on brief, for appellant.

Wm. H. Webb, Pittsburgh, Pa., Howard F. Burns, Baker, Hostetler & Petterson, Cleveland, Ohio, Morton Burden, Jr., Webb, Mackey & Burden, Pittsburgh, Pa., on brief, for appellee.

Before SIMONS, Chief Judge, and McALLISTER and MILLER, Circuit Judges.

McALLISTER, Circuit Judge.

Appellee filed a complaint in the district court asking for a declaratory judgment of invalidity and noninfringement of Patent 2,185,421 relating to a thermostatically controlled "pilot cutoff" valve for use on gas burning appliances. Appellant, the owner of the patent by assignment from the joint inventors, denied that the patent was invalid and, by way of counterclaim, charged appellee with infringement and with violation of a license...

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