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RESEARCH PRODUCTS CO. v. TRETOLITE CO.

No. 9058.

106 F.2d 530 (1939)

RESEARCH PRODUCTS CO., Limited, et al. v. TRETOLITE CO. et al.

Circuit Court of Appeals, Ninth Circuit.

September 7, 1939.

Attorney(s) appearing for the Case

Arthur C. Brown, of Kansas City, Mo., and Frank L. A. Graham, of Los Angeles, Cal., for appellants.

Leonard S. Lyon and Irwin L. Fuller, both of Los Angeles, Cal., Frank E. Barrows, of New York City, and Paul Bakewell, of St. Louis, Mo., for appellees.

Before WILBUR, HANEY, and STEPHENS, Circuit Judges.

WILBUR, Circuit Judge.

This is an appeal from an interlocutory decree holding valid patent No. 1,467,831 issued September 11, 1923, to Wm. S. Barnickel, and holding that the patent had been infringed by the appellants. The patent covers a process for treating petroleum emulsions for the purpose of recovering the oil contained in the emulsion. The appellees also alleged infringement of two other patents (Nos. 1,223,659, issued April 24, 1917, to Wm. S. Barnickel, and...

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