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MINNESOTA MINING & MANUFACTURING CO. v. NORTON CO.

Nos. 18596, 18597.

426 F.2d 1117 (1970)

MINNESOTA MINING & MANUFACTURING COMPANY, Plaintiff-Appellant, v. NORTON COMPANY, Studebaker-Packard Corporation, Hadco Corporation, Defendants-Appellees.

United States Court of Appeals, Sixth Circuit.

June 1, 1970.

Attorney(s) appearing for the Case

Thomas V. Koykka, Cleveland, Ohio, and Edward A. Haight, Chicago, Ill., William S. Burton, Arter, Hadden, Wykoff & Van Duzer, Cleveland, Ohio, Haight, Hofeldt & Davis, Chicago, Ill., Harold J. Kinney, Stanley G. DeLaHunt, Kinney, Alexander, Sell, Steldt & DeLaHunt, St. Paul, Minn., on the brief, for Minnesota Mining.

Carl G. Love, Washington, D. C., John W. Malley, Allen Kirkpatrick, William K. West, Jr., Cushman, Darby & Cushman, Washington, D. C., George H. Rudolph, Robert W. Poore, Jones, Day, Cockley & Reavis, Cleveland, Ohio, Hugh E. Smith, Troy, N. Y., on the brief, for Norton Co. et al.

Before O'SULLIVAN, EDWARDS and COMBS, Circuit Judges.

O'SULLIVAN, Circuit Judge.

On this appeal Minnesota Mining & Manufacturing Company asks reversal of a judgment of the United States District Court for the Northern District of Ohio, Eastern Division, holding invalid Minnesota's U.S. Patent No. 2,958,593. Minnesota had sued Norton Company, Studebaker-Packard Corporation, and Hadco Corporation for damages for alleged infringement of the said patent, identified as the Hoover Patent. Defendants filed a cross-appeal...

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