EnlargeDownload Link Citation: Thomas Edison's patent drawing and application for an improvement in electric lamps, patented January 27, 1880; Records of the Patent and Trademark Office; Record Group 241; National Archives. View All Pages in the National Archives Catalog View Transcript 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.
