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GEAR GRINDING MACHINE CO. v. STUDEBAKER CORPORATION

Nos. 4121, 4122.

4 F.2d 510 (1925)

GEAR GRINDING MACHINE CO. v. STUDEBAKER CORPORATION. STUDEBAKER CORPORATION v. GEAR GRINDING MACHINE CO.

Circuit Court of Appeals, Sixth Circuit.

March 7, 1925.

Attorney(s) appearing for the Case

D. Anthony Usina, of New York City (Wm. J. Belknap, of Detroit, Mich., on the brief), for plaintiff.

Edward Rector, of Chicago, Ill. (Walter E. Oxtoby, of Detroit, Mich., on the brief), for defendant.

Before DENISON, MACK, and DONAHUE, Circuit Judges.

DONAHUE, Circuit Judge.

The Gear-Grinding Machine Company brought an action against the Studebaker Corporation for the infringement of the Ward & Taylor patent, No. 1,104,589, for improvements in gear-grinding machines, and for infringement of the Ward patent, No. 1,155,532, for improvements in trimming mechanism for grinder wheels of shaft-grinding machines. The District Court held both patents invalid, so far as sued upon, and entered a decree for defendant...

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