Thomas Edison
Inventor; filed US patent 223,898 for an electric lamp on 4 November 1879
- Dates
- No dates given in the film's sources
- Chapters
- VIII. Light
What the film says
-
Filed his patent for the electric lamp six months after the Vienna cystoscope demonstration.
On the timeline
- 4 November 1879: Edison files US patent 223,898 for an electric lamp (granted 27 January 1880). timeline
Sources
Sources