As it turns out, most inventors, including the most groundbreaking, don't achieve success with every creation they devise. Curious? Click on for some lesser-known inventions by famous inventors.

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Arthur Rudolph later developed a safer version to Valier's engine. Valier is remembered as one of the most famous inventors and many institutions (observatories and schools) bear his name.

In the 1930's, Nikola Tesla, who is known for creating the induction motor and refining AC currents, imagined a machine that would allow you to project a mental image in real life and play back ...