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CHICAGO PNEUMATIC TOOL CO. v. HUGHES TOOL CO.

No. 1623.

97 F.2d 945 (1938)

CHICAGO PNEUMATIC TOOL CO. v. HUGHES TOOL CO.

Circuit Court of Appeals, Tenth Circuit.

Rehearing Denied August 15, 1938.

Attorney(s) appearing for the Case

William F. Hall, of Washington, D. C., and Earle W. Evans, of Wichita, Kan. (P. C. Simons, of Enid, Okl., on the brief), for appellant.

George I. Haight, of Chicago, Ill. (Jesse R. Stone, of Houston, Tex., and B. A. Ames, of Oklahoma City, Okl., on the brief) for appellee.

Before LEWIS, BRATTON, and WILLIAMS, Circuit Judges.

BRATTON, Circuit Judge.

Hughes Tool Company instituted this action against Chicago Pneumatic Tool Company to restrain alleged infringement of letters patent Number 1,647,753, issued November 1, 1927, relating to conical cutters used in rotary drills in drilling wells for oil and gas. Floyd L. Scott and Louis H. Wellenseik were the inventors, and plaintiff acquired the patent from them by assignment. The trial court held claims 2, 3, 4, and 5 valid and infringed.<...

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