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CHICAGO RAWHIDE MFG. CO. v. CRANE PACKING CO.

Nos. 74-1714, 74-1715.

523 F.2d 452 (1975)

CHICAGO RAWHIDE MANUFACTURING CO., Plaintiff-Appellant, v. CRANE PACKING CO., Defendant-Appellee.

United States Court of Appeals, Seventh Circuit.

Decided September 30, 1975.

Rehearing Denied November 4, 1975.

Certiorari Denied January 26, 1976.

Attorney(s) appearing for the Case

James M. Wetzel, Chicago, Ill., for plaintiff-appellant.

William E. Lucas, Charles M. Nisen, Charles F. Voytech, Chicago, Ill., for defendant-appellee.

Before SWYGERT, STEVENS and DOYLE, Circuit Judges.

Certiorari Denied January 26, 1976. See 96 S.Ct. 887.

STEVENS, Circuit Judge.

Plaintiff, the owner of a combination patent relating to a rotary seal assembly (Hatch '843),1 appeals from a judgment holding the patent invalid as obvious. Defendant has cross-appealed, claiming that plaintiff's failure, during the prosecution of the patent application, to cite two prior patents described in its own internal memorandum as "the patents...

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