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patent abstract
Edison's lamp patent
Electric-Lamp
UNITED STATES PATENT OFFICE
US 223,898
Electric-Lamp
- Patented
- January 27, 1880
- Inventors
- Thomas A. Edison
A carbon filament of high resistance, sealed in a glass globe exhausted of air, giving light by incandescence when a current passes through it.
Why it’s here: The patent is for a filament, not for the idea of electric light, which a dozen people already had
Pass it alonga thing worth keeping
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← before thiscomponentHow old the light you see iscomponentEdison's lamp patentyou are hereafter this →pageCould You Pass EverythingTen questions across all of human knowledge, ramped.
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