Court of Appeals for the Seventh Circuit April 8, 1929, No. 4085 (American Bearing Corp. v. Milwaukee Die Casting Co.)

PAGE, Circuit Judge.

Appellant charged infringement of the first eight claims of Olsen patent, No. 1,302,584:, issued May 6, 1919, for method of forming bearings. The defenses were prior use, noninfringement, and lack of invention, and defendant prevailed.

The method, so far as here important, is quite simple. A metal shell is immersed in a bath of molten soldering tin.