Legal Opinion
Magnetics, Inc. v. Arnold Engineering Co.
District Court, N.D. Illinois
Decided August 28, 1969No. 67 C 635PublishedCited by 1 opinion
1Opinion of the Court
MEMORANDUM OPINION
DECKER, District Judge.
In this patent infringement suit, Magnetics, Inc. seeks to enforce Eyberger reissue patent 25,441, Eyberger patent 3,244,782 and Brandon patent 3,011,213. The two Eyberger patents describe, respectively, the apparatus and the method for compressing magnetizable toroidal (doughnut-shaped) cores from powdered metal particles. The Brandon patent describes a lubricating machine used with the die pressing apparatus.
The Arnold Engineering Company and its parent corporation, Allegheny Ludlum Steel Corporation, are alleged infringers. Plaintiff concedes that…
2Cases cited19 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- Gayler v. WilderSupreme Court of the United States · 1851
- Electric Storage Battery Co. v. ShimadzuSupreme Court of the United States · 1939
- U. S. Industrial Chemicals, Inc. v. Carbide & Carbon Chemicals Corp.Supreme Court of the United States · 1942
- Richards v. Chase Elevator Co.Supreme Court of the United States · 1895
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3Cited by1 opinion
- Magnetics, Inc. v. The Arnold Engineering CompanyCourt of Appeals for the Seventh Circuit · 1971