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DUVAL SULPHUR & POTASH CO. v. POTASH CO. OF AMERICA

No. 5416.

244 F.2d 698 (1957)

DUVAL SULPHUR & POTASH COMPANY, Appellant, v. POTASH COMPANY OF AMERICA, Appellee.

United States Court of Appeals Tenth Circuit.

April 25, 1957.

Attorney(s) appearing for the Case

Jack D. Head and Joe E. Edwards, Houston, Tex. (Vinson, Elkins, Weems & Searls, Houston, Tex., and Hervey, Dow & Hinkle, Roswell, N. M., on the brief), for appellant.

James P. Hume, Chicago, Ill. (W. A. McGrew, Donald S. Stubbs, Denver, Colo., and Roy H. Blackman, Jr., Carlsbad, N. M. on the brief), for appellee.

Before HUXMAN, MURRAH and LEWIS, Circuit Judges.

HUXMAN, Circuit Judge.

Duval Sulphur & Potash Company1 appeals from an adverse judgment below in favor of Potash Company of America.2 Potash alleged an infringement by Duval of the Anderson Reissue Patent No. 21566.3 Damages were sought, and recovered, under 35 U.S.C. §§ 284, 285. The Patent covers a flotation process by which potassium chloride (potash) is separated...

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