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MANUFACTURING RESEARCH CORP. v. GRAYBAR ELEC. CO.

No. 80-5333.

679 F.2d 1355 (1982)

MANUFACTURING RESEARCH CORPORATION, a Florida Corporation and Electrovision, Inc., a Florida Corporation, Plaintiffs-Appellees, v. GRAYBAR ELECTRIC COMPANY, INC., a New York Corporation, Defendant-Appellant.

United States Court of Appeals, Eleventh Circuit.

July 9, 1982.

Attorney(s) appearing for the Case

Leydig, Voit, Osann, Mayer & Holt, Edward W. Osann, Jr., H. Michael Hartmann, Chicago, Ill., Maguire, Voorhis & Wells, James E. Slater, Orlando, Fla., for defendant-appellant.

Duckworth, Hobby, Allen & Pettis, Herbert L. Allen, Orlando, Fla., for plaintiffs-appellees.

Before FAY, VANCE and ARNOLD, Circuit Judges.

VANCE, Circuit Judge:

This appeal involves the validity of three patents held by plaintiffs for manual and hydraulic cable benders. After a jury trial, the district court held the three patents valid and held that defendant had infringed them by manufacturing and marketing two cable benders, one manually operated and one hydraulically operated. We reverse and remand for further proceedings.

On October 19, 1971 the United States Patent Office issued patent...

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