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Who makes it, has no need of...

Who makes it, has no need of it. Who buys it, has no use for it. Who uses it can neither see nor feel it. What is it?

Correct answers: 52

The first user who solved this task is Djordje Timotijevic.

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Unplug the Machine

I now know how it will end for me...
One of my kid's will unplug my life support to charge their phone.

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Electric race-track amusement patent

In 1899, black American inventor, Granville T. Woods was issued a U.S. patent for an "Amusement Apparatus" (No. 639,692). Woods, as the most prolific African-American inventor of the late 19th and early 20th centuries, has been called the black Edison. His numerous inventions included a steam-boiler furnace, telephone, telegraph system, electric railway and automatic air brake for railroad safety. This patent design was for small scale or large scale electrically-driven cars on a closed track, such as a figure-8 layout . If carrying persons, Woods claimed that it was suitable for amusement "use at summer and other resorts, at fairs, &c., and in or out of doors." The track could cross at different levels, or on the same level.«

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