Legal Opinion
Westinghouse Electric & Mfg. Co. v. Catskill Illuminating & Power Co.
U.S. Circuit Court for the District of Southern New York
Decided August 22, 1901Published
In Equity. Suit for infringement of patents. This cause was heard upon pleadings and proofs. It is a suit for alleged infringement of two United States letters patent to Nikola Tesla, viz. Nos. 511,559 and 511,560, both issued December 26, 1893, on application filed December 8, 1888.
1Opinion of the Court
LACOMBE, Circuit Judge.
Patent No. 511,559 is for “electrical transmission of power.” The specification begins:
“In certain patents heretofore granted I have shown and described a system of electrical power transmission, in which each motor contained two *378or more Independent energizing circuits, through which were'caused to pass alternating currents having in each circuit such a difference of phase that, hy their combined or resultant action, they produced a rotary progression of the poles or points of maximum magnetic effect of the motor, and thereby maintained the rotation of its movable…
2Cases cited3 opinions
- Westinghouse Electric & Mfg. Co. v. Dayton Fan & Motor Co.U.S. Circuit Court for the District of Southern Ohio · 1901
- Westinghouse Electric & Mfg. Co. v. New England Granite Co.District Court, D. Connecticut · 1900
- Tesla Electric Co. v. ScottU.S. Circuit Court for the District of Eastern Pennsylvania · 1899