The Incandescent Lamp Patent
Supreme Court of the United States
APPEAL FROM THE CIRCUIT COURT OF THE UNITED STATES FOR THE WESTERN DISTRICT OF PENNSYLVANIA. This was a bill in equity, filed by the consolidated Electric Light Company against the McKeesport Light Company, to recover damages for the infringement of . letters patent No. 317,076, issued May 12, 1885, to the Electro-Dynamic Light Company, assignee of Sawyer and Man, for an electric light.
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APPEAL FROM THE CIRCUIT COURT OF THE UNITED STATES FOR THE WESTERN DISTRICT OF PENNSYLVANIA. This was a bill in equity, filed by the consolidated Electric Light Company against the McKeesport Light Company, to recover damages for the infringement of . letters patent No. 317,076, issued May 12, 1885, to the Electro-Dynamic Light Company, assignee of Sawyer and Man, for an electric light. The defendants justified under certain patents to Thomas A. Edison, particularly No. 223,898, issued January 27, 1880; denied the novelty and utility of the complainants’ patent, and averred that the same had…
1Opinion of the CourtJustice Brown
In order to obtain a complete understanding of the scope of the Sawyer and Man patent, it is desirable to consider briefly the state of the art at the time the application was originally made, which was in January, 1880.
Two general forms of electric illumination had for many years been the subject of experiments more or less successful, one of which was known as the arc light, produced by the passage of a current of electricity between the points of two carbon pencils, placed end to end, and slightly separated from each other. In its passage from one point to the other through the air, the…
2Cases cited5 opinions
- Grant v. RaymondSupreme Court of the United States · 1832
- Howard v. Detroit Stove WorksSupreme Court of the United States · 1893
- Wood v. UnderhillSupreme Court of the United States · 1846
- Tyler v. BostonSupreme Court of the United States · 1869
- Béné v. JeantetSupreme Court of the United States · 1889
3Cited by99 opinions
- General Electric Co. v. Wabash Appliance Corp.Supreme Court of the United States · 1938
- Corona Cord Tire Co. v. Dovan Chemical Corp.Supreme Court of the United States · 1928
- Holland Furniture Co. v. Perkins Glue Co.Supreme Court of the United States · 1928
- Locklin v. Switzer Bros.Court of Appeals for the Ninth Circuit · 1961
- Schering Corporation v. GilbertCourt of Appeals for the Second Circuit · 1946
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