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APPLICATION OF DURBIN

Patent Appeal No. 8053.

404 F.2d 990 (1969)

Application of Howard M. DURBIN and John F. Wood.

United States Court of Customs and Patent Appeals.

January 16, 1969.

Attorney(s) appearing for the Case

Marshall A. Burmeister, Chicago, Ill., for appellants.

Joseph Schimmel, Washington, D. C. (Jere W. Sears, Washington, D. C., of counsel), for Commissioner of Patents.

Before WORLEY, Chief Judge, and RICH, ALMOND, BALDWIN, and KIRKPATRICK, Judges.

ALMOND, Judge.

This is an appeal from the decision of the Board of Appeals affirming the rejection of claims 6 through 9 of appellants' application.1

The invention relates to a pickup device for use with stereophonic phonograph records wherein the two sound channels are recorded in a single groove. One system of cutting such a record involves simultaneously modulating the cutting head by impressing the signal of one of the channels...

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