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HALLIBURTON OIL WELL CEMENTING CO. v. WALKER

No. 10513.

146 F.2d 817 (1944)

HALLIBURTON OIL WELL CEMENTING CO. v. WALKER et al. WALKER et al. v. HALLIBURTON OIL WELL CEMENTING CO.

Circuit Court of Appeals, Ninth Circuit.

December 28, 1944.

Attorney(s) appearing for the Case

Frank L. A. Graham, of Los Angeles, Cal., and Earl Babcock, of Duncan, Okl., for appellant Halliburton Oil Well Cementing Co.

Harold W. Mattingly and Robert W. Fulwider, both of Los Angeles, Cal., for appellant Cranford P. Walker et al.

Before DENMAN, STEPHENS, and HEALY, Circuit Judges.

HEALY, Circuit Judge.

Involved here are cross appeals from a decree in an infringement suit. The court held valid and infringed two patents of Walker, these being No. 2,156,519 and reissue No. 21,383. It adjudged invalid Walker's patent No. 2,209,944.

For convenience we shall refer to the adverse parties as Walker and Halliburton, Walker being the plaintiff. The several patents will be discussed in turn.

Patent No. 2,156,519.

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