American Casting Mach. Co. v. Pittsburgh Coal Washer Co.
Court of Appeals for the Third Circuit
Appeal from the District Court of the United States for the Western District of Pennsylvania; Charles P. Orr, Judge. Suit in equity by the American Casting Machine Company against the Pittsburgh Coal Washer Company. Decree for defendant, and complainant appeals. The following is the opinion of Orr, District Judge: This patent suit originally involved three patents.
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Appeal from the District Court of the United States for the Western District of Pennsylvania; Charles P. Orr, Judge. Suit in equity by the American Casting Machine Company against the Pittsburgh Coal Washer Company. Decree for defendant, and complainant appeals. The following is the opinion of Orr, District Judge: This patent suit originally involved three patents. Plaintiffs, prior to the trial, gave notice to the defendant that they would withdraw from consideration United States patent No. 629,480, issued July 25, 1899, to E. A. Uehling and James W. Miller, for “casting and conveying…
1Opinion of the Court
BUFFINGTON, Circuit Judge.
In the court below the American •Casting Machine Company, the owner of patent No. 788,334, granted April 25, 1903, to James Scott for “apparatus for casting metal,” and of patent No. 806,700, granted December 5, 1905, to J. B. McKennan and A. H. Helander for “links for conveyors,” filed a bill against the Pittsburgh Coal Washer Company, charging infringement of certain claims of said patents. On'final hearing that court dismissed the bill, holding both patents lacked invention, and that the Scott patent was also invalid because, more than seven months before Scott…
2Cited by4 opinions
- In re RobertsCourt of Appeals for the D.C. Circuit · 1920
- General Electric Co. v. De Forest Radio Co.District Court, D. Delaware · 1927
- American Tri-Ergon Corp. v. Paramount Publix Corp.District Court, E.D. New York · 1933
- Pittsburgh Coal Washer Co. v. Slag Rock Mach. Co.District Court, W.D. Pennsylvania · 1922