Invention of lightbulb (dec 31, 1879 – dec 31, 1879)
Description:
Continuing to improve his design, by November 1879, he filed for a U.S. patent for an electric lamp using “a carbon filament or strip coiled and connected … to platina contact wires”. The filament was made from a piece of carbonized thread. From coneption to invention, this is one of Thomas Edison's early light bulbs.
Added to timeline:
Brisa Blew U6 Timeline
Date:
