Deister Concentrator Co. v. Deister Mach. Co.
Court of Appeals for the Seventh Circuit
Appeal from the District Court of the United States for the District of Indiana. Suit by the Deister Machine Company against the Deister Concentrator Company. Decree for plaintiff, and defendant appeals.
1Opinion of the Court
EVANS, Circuit Judge.
Appellant attacks the decree upholding certain claims in three patents covering improvements in concentrating tables, asserting that all the patents are invalid, and that its structures do not infringe any of the claims involved. It also claims that as to the first two patents issued there has been double patenting. A brief description of the purpose and method of operation of concentrating tables will serve to explain Ihe problem confronting appellee’s predecessor in title to the patents in question, as well as the means adopted to solve it.
Tables used in mining…
2Cases cited4 opinions
- Miller v. Eagle Manufacturing Co.Supreme Court of the United States · 1894
- Otis Elevator Co. v. Portland Co.Court of Appeals for the First Circuit · 1903
- Morse Chain Co. v. Link Belt Machinery Co.Court of Appeals for the Seventh Circuit · 1908
- Union Typewriter Co. v. L. C. Smith & Bros.Court of Appeals for the Third Circuit · 1910
3Cited by11 opinions
- J. I. Clark Company and John R. Clark v. Jones & Laughlin Steel CorporationCourt of Appeals for the Seventh Circuit · 1961
- Theroz Co. v. United States Industrial Chemical Co.District Court, D. Maryland · 1926
- Standard Brands v. Federal Yeast CorporationDistrict Court, D. Maryland · 1930
- EJ Brooks Co. v. Stoffel Seals CorporationDistrict Court, S.D. New York · 1958
- Sternfeld v. United StatesDistrict Court, N.D. New York · 1929
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