Legal Opinion
Delta Mfg. Co. v. E. L. Essley Machinery Co.
Court of Appeals for the Seventh Circuit
Decided February 28, 1946No. 8789PublishedCited by 11 opinions
1Opinion of the Court
SPARKS, Circuit Judge.
Plaintiff charged defendant with infringement of Claims 6, 7 and 8 of its United States Patent to Tautz, No. 2,069,-395, issued February 2, 1937, on an application filed October 21, 1935. The answer denied infringement and alleged invalidity for lack of invention. The court gave a written opinion, found the facts specially, and rendered its conclusions of law thereon. By these it announced, found and concluded that each of the claims was valid and infringed. The only issue here is invalidity.
The invention relates to safety shields for grinding wheels and the like. Its…
2Cases cited5 opinions
- Seymour v. OsborneSupreme Court of the United States · 1871
- Nordberg Mfg. Co. v. Woolery MacHine Co.Court of Appeals for the Seventh Circuit · 1935
- Consolidated Roller Mill Co. v. WalkerSupreme Court of the United States · 1891
- Chicago Lock Co. v. TratschCourt of Appeals for the Seventh Circuit · 1934
- Delta Mfg. Co. v. E. L. Essley Machinery Co.District Court, E.D. Wisconsin · 1944
3Cited by11 opinions
- Amphenol Corporation, a Corporation of Delaware v. General Time Corporation, a Corporation of DelawareCourt of Appeals for the Seventh Circuit · 1968
- Stanley Works v. Rockwell Mfg. Co.Court of Appeals for the Third Circuit · 1953
- Illinois Tool Works, Inc. v. Continental Can CompanyDistrict Court, N.D. Illinois · 1967
- Crane Co. v. Aeroquip CorporationDistrict Court, N.D. Illinois · 1973
- England v. Deere & Co.District Court, S.D. Illinois · 1960
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