Legal Opinion
Independent Pneumatic Tool Co. v. Chicago Pneumatic Tool Co.
District Court, N.D. Illinois
Decided October 7, 1947No. 47C855PublishedCited by 5 opinions
1Opinion of the Court
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 its Amtsberg and Fitch patents, has been and is being manufactured and assembled only at its Aurora, Illinois, plant, and…
2Cases cited14 opinions
- Kline v. Burke Construction Co.Supreme Court of the United States · 1922
- Neirbo Co. v. Bethlehem Shipbuilding Corp.Supreme Court of the United States · 1939
- Ex Parte SchollenbergerSupreme Court of the United States · 1878
- Pennsylvania Fire Insurance v. Gold Issue Mining & Milling Co.Supreme Court of the United States · 1917
- Oklahoma Packing Co. v. Oklahoma Gas & Electric Co.Supreme Court of the United States · 1940
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3Cited by5 opinions
- Edward A. Martin v. Graybar Electric Company, Inc.Court of Appeals for the Seventh Circuit · 1959
- Clayton v. Swift & CompanyDistrict Court, E.D. Virginia · 1955
- Coughlan v. CoughlanAlaska Supreme Court · 1967
- Independent Pneumatic Tool Co. v. Chicago Pneumatic Tool Co.Court of Appeals for the Seventh Circuit · 1948
- Edward A. Martin v. Graybar Electric Company, Inc.Court of Appeals for the Seventh Circuit · 1959