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Hard Nikola Tesla

What U.S. patent number covered Tesla's 1888 alternating-current motor?

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Intermediate Nikola Tesla

In which New Jersey town did Tesla help create an arc lighting system in the 1880s?

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Hard Nikola Tesla

What was Tesla's first U.S. patent issued in 1886 for?

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Intermediate Nikola Tesla

Which inventor's company hired Tesla in Paris before his move to America?

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Easy Nikola Tesla

Which inventor demonstrated radio control with a boat at Madison Square Garden in 1898?

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