Weston Electrical Instrument Co. v. Empire Electrical Instrument Co.
U.S. Circuit Court for the District of Southern New York
In Equity. Suit for infringement of letters patent No. 392,387, for an electrical measuring apparatus, granted to Edward Weston November 6, 1888. On motion for preliminary injunction.
1Opinion of the Court
WHEELER, District Judge.
This suit is brought upon patent No. 392,387, dated November 6, 1888, and granted to Edward Weston, for an electrical measuring'apparatus, which has been sustained by a decree of this court on final hearing in Weston Electrical Instrument Co. v. Jewell Electrical Instrument Co. (March, 1904) 128 Fed. 939. It has been heard on a motion for a preliminary injunction.
The differences between the defendant’s instruments and those of the patent are formal, and not functional. The parts are different in shape, but they measure currents of electricity by the same means, in the…
2Cases cited1 opinion
- Weston Electrical Instrument Co. v. JewellU.S. Circuit Court for the District of Southern New York · 1904