Legal Opinion
R. C. Mahon Co. v. Detroit Steel Products Co.
Court of Appeals for the Sixth Circuit
Decided November 8, 1939No. 7909PublishedCited by 2 opinions
1Opinion of the Court
HICKS, Circuit Judge.
The patent in suit, owned by appellee, is No. 1,574,586, February 23, 1926, to Loucks and Gillett, herein called Gillett. It is for “Building Construction” and relates to structures embodying sheet metal units, adapted, when assembled, to produce light but strong foundations for roofs, floors, etc. The defenses were invalidity and non-infringement.
The District Court decreed that Claims 5, 6 and 7 were valid and infringed. Claim 6 is typical. It combines (1) with supporting members, (2) a series of sheet metal plates, (3) mounted thereon, (4) each plate having integral…
2Cases cited4 opinions
- Newcomb, David Co. v. R. C. Mahon Co.Court of Appeals for the Sixth Circuit · 1932
- Condit v. Jackson Corset Co.Court of Appeals for the Sixth Circuit · 1929
- Stockham Pipe & Fittings Co. v. Ohio Steel Foundry Co.Court of Appeals for the Sixth Circuit · 1935
- John T. Riddell, Inc. v. P. Goldsmith Sons Co.Court of Appeals for the Sixth Circuit · 1937
3Cited by2 opinions
- E-Z Paintr Corp. v. ThomasDistrict Court, E.D. Michigan · 1953
- Cox v. DohertyDistrict Court, S.D. California · 1942