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  5. 174 F.2d 128 (1949)
 

APPLICATION OF FIELD

Patent Appeal No. 5576.

174 F.2d 128 (1949)

Application of FIELD.

United States Court of Customs and Patent Appeals.

April 12, 1949.

Attorney(s) appearing for the Case

Herbert M. Birch, of Washington, D. C., for appellant.

W. W. Cochran, of Washington, D. C. (J. Schimmel, of Washington, D. C., of counsel), for the Commissioner of Patents.

Before GARRETT, Chief Judge, and HATFIELD, JACKSON, O'CONNELL and JOHNSON, Judges.

JACKSON, Judge.

Appellant appeals from a decision of the Board of Appeals of the United States Patent Office, affirming that of the Primary Examiner, finally rejecting all of the claims, 17, 19 to 21, inclusive, and 23 to 27, inclusive, of an application for a patent, serial No. 504,774, filed October 2, 1943, alleging "Improvements in or relating to the production of screened positive or negative photographic plates," as unpatentable over the following prior art...

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