Johnson Co. v. Pennsylvania Steel Co.
U.S. Circuit Court for the District of Eastern Pennsylvania
This was a bill by the Johnson Company against the Pennsylvania Steel Company for alleged infringement of a patent for a street-railway switch.
1Opinion of the Court
DALLAS, Circuit Judge.
This is a suit brought by the Johnson Company, a corporation of Kentucky, and having works located at Johnstown, Cambria county, Pa., against the Pennsylvania Steel Company, a corporation of Pennsylvania, and having works at Steelton, Pa., for infringement of letters patent No. 333,474, granted to Arthur J. Moxham, December 29, 1885, for railroad switch, and by him assigned to the plaintiff company. The bill is in the usual form, and the answer and amended answer deny infringement, and set up certain prior patents as anticipations of the invention of said patent.
The only…
2Cases cited1 opinion
- Johnson Co. v. Pennsylvania Steel Co.U.S. Circuit Court for the District of Eastern Pennsylvania · 1894
3Cited by1 opinion
- Emerson v. National Cylinder Gas CompanyDistrict Court, D. Massachusetts · 1956