General Electric Co. v. Sangamo Electric Co.
Court of Appeals for the Seventh Circuit
Appeal from the Circuit Court of the United States for the Southern District of Illinois. Suit in equity by the General Electric Company against the, Sangamo Electric Company. The appeal is from a decree dismissing the bill in a suit for the infringement of letters patent No. 791,673, issued June 6, 1905, to Frank P. Cox, assignor to appellant, for new and useful improvements in Electric Meters.
Read the full summary
Appeal from the Circuit Court of the United States for the Southern District of Illinois. Suit in equity by the General Electric Company against the, Sangamo Electric Company. The appeal is from a decree dismissing the bill in a suit for the infringement of letters patent No. 791,673, issued June 6, 1905, to Frank P. Cox, assignor to appellant, for new and useful improvements in Electric Meters. The claims sued upon are as follows: “11. In a meter, two current armature-paths, means for creating a magnetic field in operative, relation with one of said paths and for creating a magnetic-field of…
1Opinion of the CourtGrosscup, Circuit Judge
Cox, in his original application, described as one element of his invention, the automatic means for varying the ratio of- the resistances, and limited his claims to a combination of which such automatic means was an element. The application of I,anpliier was for a combination that embodied the varying of the ratio of resistance by manual adjustment. The two applications having come into interference and priority having been awarded to Cox upon the features set forth in his application, additional claims were filed and allowed, which, if valid, extended the patent so as to include the…
2Cited by9 opinions
- Powers-Kennedy Contracting Corp. v. Concrete Mixing & Conveying Co.Supreme Court of the United States · 1930
- Kurtz v. Belle Hat Lining Co.Court of Appeals for the Second Circuit · 1922
- Amoco Production Co. v. LindleySupreme Court of Oklahoma · 1980
- Automatic Devices Corp. v. Sinko Tool & Mfg. Co.Court of Appeals for the Seventh Circuit · 1940
- Pieper v. S. S. White Dental Mfg. Co.Court of Appeals for the Seventh Circuit · 1915
4 more not listed; retrieve them via the Exa API.