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DERBY v. WHITWORTH

Patent Appeal No. 3045.

62 F.2d 368 (1932)

DERBY et al. v. WHITWORTH.

Court of Customs and Patent Appeals.

December 27, 1932.

Attorney(s) appearing for the Case

William W. Dodge, of Washington, D. C., for appellants.

H. C. Bierman, of New York City (Ellis S. Middleton, of New York City, of counsel), for appellee.

Before GRAHAM, Presiding Judge, and BLAND, HATFIELD, GARRETT, and LENROOT, Associate Judges.

LENROOT, Associate Judge.

This is an interference proceeding wherein the Board of Appeals of the United States Patent Office affirmed a decision of the Examiner of Interferences, awarding priority of invention upon all the counts in issue to appellee. From such decision appellants have appealed to this court.

The invention involved relates to flotation agents and methods of effecting concentration of minerals therewith. The counts are thirty-three in number...

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