GRIP NUT CO. v. MacLEAN-FOGG LOCK NUT CO.

No. 8666.

34 F.2d 41 (1929)

GRIP NUT CO. v. MacLEAN-FOGG LOCK NUT CO.

District Court, N. D. Illinois, E. D.

August 7, 1929.


Attorney(s) appearing for the Case

Hill & Hill and Rector, Hibben, Davis & McCauley, all of Chicago, Ill., for complainant.

Williams, Bradbury, McCaleb & Hinkle, of Chicago, Ill., for defendant.


LINDLEY, District Judge.

Plaintiff seeks to enjoin defendant from infringing its patent No. 1,271,782 for lock nut and process for making same, issued to Sharp July 9, 1918. Defendant asserts as defenses invalidity and noninfringement.

Typical claims of plaintiff are No. 1 for process and No. 6 for device, both quoted in the margin.1

It is apparent that to achieve his desired result the patentee brought about in an ordinary...

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