Electric Controller & Supply Co. v. Westinghouse Electric & Mfg. Co.
Court of Appeals for the Sixth Circuit
Appeal from the Circuit Court of the United States for the Northern District of Ohio.
1Opinion of the Court
KNAPPEN, District Judge.
This is a suit for the alleged infringement of claims 13 and 14 of United States patent No. 518,693, dated April 24, 1894, issued to the appellee as assignee of Eange & Eamme, upon a “controlling switch for electric railways,” usually called in the record a “controller.” The defenses argued here are anticipation and lack of patentable invention.
By the decree of the Circuit Court the claims in question were held valid and infringed. The office of an electric railway controller, broadly speaking, is to govern the amount of current flowing through the motors, and thereby…
2Cases cited8 opinions
- Potts v. CreagerSupreme Court of the United States · 1895
- Hobbs v. BeachSupreme Court of the United States · 1901
- Keystone Manufacturing Co. v. AdamsSupreme Court of the United States · 1894
- Dowagiac Mfg. Co. v. Superior Drill Co.Court of Appeals for the Sixth Circuit · 1902
- Standard Caster & Wheel Co. v. Caster Socket Co.Court of Appeals for the Sixth Circuit · 1901
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3Cited by11 opinions
- Herman v. Youngstown Car Mfg. Co.Court of Appeals for the Sixth Circuit · 1911
- Interurban Ry. & Terminal Co. v. Westinghouse Electric & Mfg. Co.Court of Appeals for the Sixth Circuit · 1911
- Cincinnati Traction Co. v. PopeCourt of Appeals for the Sixth Circuit · 1913
- Fleischman Yeast Co. v. Federal Yeast CorporationDistrict Court, D. Maryland · 1925
- Lemley v. Dobson-Evans Co.Court of Appeals for the Sixth Circuit · 1917
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