I thought i better check up on the answer for question 7,
7. Thomas Edison patents the electric lightbulb what year?
the answer i had was 1879.
But after Tristan had said he applied for patent in 1880, which was invalidated in 1883, then he finally got validation in 1889.
So i thought i better look into this further
Electric Lights.
application date Oct 14th 1878
issued on April 22nd 1879
Apparatus for electric lights
application date Feb 1879
issued Feb 10th 1880
Electric light
application date Feb 3rd 1879
issued May 4th 1880
this was found on
www.tomedison.org/patent.html
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