MINNESOTA MINING & MFG. CO. v. KENT INDUSTRIES, INC.

No. 18447.

409 F.2d 99 (1969)

MINNESOTA MINING AND MANUFACTURING COMPANY, Plaintiff-Appellant, v. KENT INDUSTRIES, INC., Sidney L. Caplan, Delores M. Caplan, Anne J. Moss, Defendants-Appellees.

United States Court of Appeals Sixth Circuit.

April 14, 1969.


Attorney(s) appearing for the Case

Stanley G. DeLaHunt, St. Paul, Minn., for appellant, Harold J. Kinney, Walter N. Kirn, Jr., Kinney, Alexander, Sell, Steldt & DeLaHunt, St. Paul, Minn., Leslie W. Fleming, Butzel, Eaman, Long, Gust & Kennedy, Detroit, Mich., on brief.

Bernard J. Cantor, Detroit, Mich., for appellees, Cullen, Sloman & Cantor, Richard D. Grauer, Daniel G. Cullen, Detroit, Mich., on brief.

Before O'SULLIVAN, CELEBREZZE and PECK, Circuit Judges.


JOHN W. PECK, Circuit Judge.

Plaintiff-appellant (hereinafter 3-M) brought suit for injunctive relief and damages against the defendants-appellees in the District Court for infringement of its Thomson patent No. 2,610,910, relating to a neoprene-phenolic adhesive cement, that was issued on September 16, 1952. The defendants-appellees claimed the patent was invalid and raised several defenses, two of which were tried while...

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