Legal Opinion
Independent Pneumatic Tool Co. v. Chicago Pneumatic Tool Co.
Court of Appeals for the Seventh Circuit
Decided March 4, 1952No. 10408, 10409PublishedCited by 27 opinions
1Opinion of the Court
KERNER, Circuit Judge.
This was a complaint in which plaintiff Independent Pneumatic Tool Company prayed that the court enter a declaratory judgment that defendant’s Amtsberg patent 2219883, issued October 29, 1940, on an application filed June 5, 1937, and Fitch patent 2219865, issued October 29, 1940, on an application filed October 14, 1938, were invalid, and that plaintiff’s “Thor Wrench” was not an infringement of either of these patents. The defendant Chicago Pneumatic Tool Company filed a counterclaim in which it asserted that its patents were valid and that plaintiff’s wrenches…
2Cases cited8 opinions
- Graver Tank & Mfg. Co. v. Linde Air Products Co.Supreme Court of the United States · 1950
- Boyden Power-Brake Co. v. Westinghouse Westinghouse v. Boyden Power-Brake Co.Supreme Court of the United States · 1898
- Westinghouse v. Boyden Power Brake Co.Supreme Court of the United States · 1898
- Hazeltine Research, Inc. v. Admiral Corp.Court of Appeals for the Seventh Circuit · 1950
- Flowers v. Austin-Western Co.Court of Appeals for the Seventh Circuit · 1945
3 more not listed; retrieve them via the Exa API.
3Cited by27 opinions
- Autogiro Company of America v. The United StatesUnited States Court of Claims · 1967
- Jeoffroy Mfg., Inc. v. William T. Graham. William T. Graham v. Jeoffroy Mfg., IncCourt of Appeals for the Fifth Circuit · 1955
- Elgen Manufacturing Corporation v. Ventfabrics, Inc., Elgen Manufacturing Corporation v. Ventfabrics, Inc.Court of Appeals for the Seventh Circuit · 1963
- Benjamin A. Skirow and Nathan Skirow, D/B/A Skirow Brothers, a Partnership v. Roberts Colonial House, Inc.Court of Appeals for the Seventh Circuit · 1966
- Serge A. Scherbatskoy v. United States Steel Corporation and Sperry Rand CorporationCourt of Appeals for the Seventh Circuit · 1961
22 more not listed; retrieve them via the Exa API.