Inventions kaun banega crorepati online
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When were bar code scanners invented?
What Igor Sikorsky invented?
Jet engine airplane
Who was the first American female to patent her invention, a method of weaving straw with silk?
Who had an explosive idea and first patented DYNAMITE?
J. R. Gluber
What plaything was invented by Joe McVicker in 1956?
There are 5 questions to complete.