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ENTERPRISE RAILWAY EQUIP. CO. v. KEYSTONE RY. EQUIP. CO.

No. 12508.

267 F.2d 102 (1959)

ENTERPRISE RAILWAY EQUIPMENT COMPANY, an Illinois corporation, Plaintiff-Appellee, v. KEYSTONE RAILWAY EQUIPMENT COMPANY, an Illinois corporation, Defendant-Appellant.

United States Court of Appeals Seventh Circuit.

Rehearing Denied June 11, 1959.

Attorney(s) appearing for the Case

Benton Baker, Max W. Zabel, Bayard Jones, Chicago, Ill., for defendant-appellant.

Edward A. Haight, Robert R. Lockwood, John W. Hofeldt, Chicago, Ill., for plaintiff-appellee.

Before DUFFY, Chief Judge, SCHNACKENBERG, Circuit Judge, and WHAM, District Judge.

SCHNACKENBERG, Circuit Judge.

This is a patent infringement action. Plaintiff, Enterprise Railway Equipment Company, charged defendant, Keystone Railway Equipment Company, both Illinois corporations, with infringement of Dorey U. S. patent No. 2,791,973. Defendant denied infringement and set up a defense of invalidity of the patent. The district court held the patent valid and infringed, and entered a judgment, findings of fact and conclusions of law. Defendant has...

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