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BARRETT CO. v. KOPPERS CO.

Nos. 3517, 3518.

22 F.2d 395 (1927)

BARRETT CO. et al. v. KOPPERS CO. et al. KOPPERS CO. et al. v. BARRETT CO. et al.

Circuit Court of Appeals, Third Circuit.

Rehearing Denied November 9, 1927.

Attorney(s) appearing for the Case

R. T. M. McCready, of Pittsburgh, Pa. (W. B. Morton, of New York City, of counsel), for Barrett Co.

Byrnes, Stebbins & Parmelee, of Pittsburgh, Pa. (George E. Stebbins, of Pittsburgh, Pa., and Henry Love Clarke, of Baltimore, Md., of counsel), for Koppers Co.

Before BUFFINGTON, WOOLLEY, and DAVIS, Circuit Judges.

WOOLLEY, Circuit Judge.

The invention in controversy is a process for the manufacture of artificial resin whose novel feature is the addition of an intermediate step to the previously known polymerization process involving an acid treatment and distillation whereby certain impurities which affect the color of the resin are removed. Marc Darrin conceived and reduced the invention to practice on July 1, 1918, and filed an application for a patent on September 6 of the...

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