Legal Opinion
Skil Corporation v. Cutler-Hammer, Inc.
Court of Appeals for the Seventh Circuit
Decided July 14, 1969No. 17160PublishedCited by 12 opinions
1Opinion of the Court
*822DUFFY, Senior Circuit Judge.
This is a patent infringement suit involving plaintiff’s Gawron Patent No. 8,209,228 (228). This patent relates to an electrical control system for small portable electric tools, such as electric drills.
Gawron, a graduate electrical engineer, spent two years investigating various means for achieving speed control over motors in portable tools. Gawron conceived his invention in April 1962 and in the fall of that year, constructed a tool which embodied a speed control system as shown in the patent.
The Gawron system is comprised of a combination of elements, including…
2Cases cited8 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- United States v. AdamsSupreme Court of the United States · 1966
- McCormick Harvesting MacHine Co. v. AultmanSupreme Court of the United States · 1898
- Illinois Tool Works, Inc. v. Continental Can Company, Inc.Court of Appeals for the Seventh Circuit · 1968
- Illinois Tool Works, Inc. v. Continental Can CompanyDistrict Court, N.D. Illinois · 1967
3 more not listed; retrieve them via the Exa API.
3Cited by12 opinions
- Airtex Corporation, and Cross-Appellee v. Shelley Radiant Ceiling Company, and Cross-AppellantCourt of Appeals for the Seventh Circuit · 1976
- Greenberg v. Croydon Plastics Co., Inc.District Court, E.D. Pennsylvania · 1974
- Westwood Chemical, Inc. v. Owens-Corning Fiberglas CorporationCourt of Appeals for the Sixth Circuit · 1971
- Crane Co. v. Aeroquip CorporationDistrict Court, N.D. Illinois · 1973
- Dart Industries, Inc. v. E. I. Du Pont De Nemours & Co.District Court, N.D. Illinois · 1972
7 more not listed; retrieve them via the Exa API.