AT Email: Edison Bulbs, Story and Sources - 2.6.08
February 6, 2008 Thomas Edison presented his first light bulb in 1879 (U.S. Patent 223,898 - there were many disputes about this*) and it's been improved upon and made more efficient ever s...
February 6, 2008 Thomas Edison presented his first light bulb in 1879 (U.S. Patent 223,898 - there were many disputes about this*) and it's been improved upon and made more efficient ever s...