Johns-Pratt Co. v. Economy Fuse & Mfg. Co.
District Court, E.D. Pennsylvania
In Equity. Suit by the Johns-Pratt Company against the Economy Eusc & Manufacturing Company. On final hearing.
1Opinion of the Court
DICKINSON, District Judge.
The complaint of the plaintiff alleges an infringement of letters patent No. 660,341, dated October 23, 1900, issued to Joseph Sachs; the right of the inventor therein being now owned by the plaintiff. The letters patent were issued for an improvement in safety fuses for electrical use.
[1] The defense is a challenge of the proprietary right claimed, the patent being alleged to be invalid. This is based upon lack of invention and prior use. As the present case follows previous judicial inquiries into the validity of this patent, the inquiry here is directed chiefly to…
2Cases cited8 opinions
- E. H. Freeman Electric Co. v. Johns-Pratt Co.Court of Appeals for the Third Circuit · 1913
- Johns-Pratt Co. v. E. H. Freeman Electric Co.District Court, D. New Jersey · 1912
- Johns-Pratt Co. v. Sachs Co.Court of Appeals for the Second Circuit · 1909
- Quinalty v. TempleCourt of Appeals for the Fifth Circuit · 1910
- Johns-Pratt Co. v. Sachs Co.U.S. Circuit Court for the District of Connecticut · 1909
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