UNIVERSAL COIN LOCK CO. v. AMERICAN SANITARY LOCK CO.

No. 6735.

104 F.2d 781 (1939)

UNIVERSAL COIN LOCK CO. v. AMERICAN SANITARY LOCK CO. et al.

Circuit Court of Appeals, Seventh Circuit.

June 13, 1939.


Attorney(s) appearing for the Case

John G. McNutt and Richard M. L. Griffith, both of Indianapolis, Ind., for appellant.

Hubert Hickam and Alan W. Boyd, both of Indianapolis, Ind., for appellee American Sanitary Lock Co.

Robert D. Coleman, of Indianapolis, Ind., for appellee Nik-O-Lock Co.

Before EVANS, TREANOR, and KERNER, Circuit Judges.


KERNER, Circuit Judge.

On June 10, 1936, plaintiff, as owner of Patent No. 1,271,536, issued July 9, 1918, relating to coin-controlled locks with a guard flange, brought this suit to recover damages for an alleged infringement. The defendants denied the alleged infringement, interposed the further defense of laches and equitable estoppel, and prayed for affirmative equitable relief. The suit proceeded to trial on the equitable defenses pursuant to Section 274b of...

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