Legal Opinion
Delta Mfg. Co. v. E. L. Essley Machinery Co.
District Court, E.D. Wisconsin
Decided November 6, 1944No. Civ. A. No. 1238PublishedCited by 3 opinions
1Opinion of the Court
DUFFY, District Judge.
The complaint herein charges infringement of Tautz Patent No. 2,069,395 issued February 2, 1937, on application filed October 21, 1935. The alleged invention relates to improvements in safety shields. Claims 6, 7, and 8 are in issue.* Defenses are invalidity for lack of invention, anticipation and aggregation, and non-infringement of claims 6 and 8. Hammond Machinery Builders, Inc. of Kalamazoo, Michigan, manufacture the accused shields and have assumed full control of the defense of this action.
From the time that power grinder machines came into use workmen operating…
2Cases cited6 opinions
- Goodyear Tire & Rubber Co. v. Ray-O-Vac Co.Supreme Court of the United States · 1944
- Hildreth v. MastorasSupreme Court of the United States · 1921
- Wahl Clipper Corporation v. Andis Clipper Co.Court of Appeals for the Seventh Circuit · 1933
- Peerless Equipment Co. v. W. H. Miner, Inc.Court of Appeals for the Seventh Circuit · 1937
- James P. Marsh Corp. v. United States Gauge Co.Court of Appeals for the Seventh Circuit · 1942
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3Cited by3 opinions
- Stanley Works v. Rockwell Mfg. Co.Court of Appeals for the Third Circuit · 1953
- Delta Mfg. Co. v. E. L. Essley Machinery Co.Court of Appeals for the Seventh Circuit · 1946
- Stanley Works v. Rockwell Mfg. Co.District Court, W.D. Pennsylvania · 1952