Today’s Document from the National Archives

Document for January 27th:
Thomas Edison's Patent Application for the Light Bulb


Thomas Edison's Patent Application for the Light Bulb

Thomas Edison's patent drawing for an improvement in electric lamps, patented January 27, 1880; Records of the Patent and Trademark Office; Record Group 241; National Archives.

On January 27, 1880, Thomas Edison received the historic patent embodying the principles of his incandescent lamp that paved the way for the universal domestic use of electric light.
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Yesterday's document: January 26th
Heroic Actions of Lt. Audie L. Murphy

Tomorrow's document: January 28th
"Birdman of Alcatraz"

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