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INDEPENDENT PNEUMATIC T. CO. v. CHICAGO PNEUMATIC T. CO.

No. 47C855.

74 F.Supp. 502 (1947)

INDEPENDENT PNEUMATIC TOOL CO. v. CHICAGO PNEUMATIC TOOL CO.

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

October 7, 1947.

Attorney(s) appearing for the Case

Davis, Lindsey, Hibben & Noyes, of Chicago, Ill., for plaintiff.

Clarence J. Loftus, of Chicago, Ill., and Darby & Darby, of New York City, for defendant.

SULLIVAN, District Judge.

This is a suit for a declaratory judgment declaring that two patents owned by defendant are invalid and not infringed. The complaint sets out that Plaintiff is a Delaware corporation, but for the last fifty years has maintained its principal manufacturing plant in Aurora, Illinois, and for over twenty-five years has maintained its principal executive and business offices in Chicago, Illinois. The impact wrench, which defendant claims infringes...

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