Dutch alchemist Cornelis Drebbel got a patent in 1598 for the design of a perpetual motion machine. It was a clock that was powered by daily changes in barometric pressure. In the early 1900s, he was largely scrubbed from the history books because everyone knows that perpetual motion is impossible.
The clock worked, of course. There are still paintings of it — based on those, rolex made a functional replica.
But if you've never heard about Drebbel, perpetual motion is the reason. That wasn't his only invention, of course. He also invented:
* The first cybernetic system (a thermostat; a self-governing oven for incubating eggs)
* The first air conditioning system
* The first functional submarine
* Magic lanterns, telescopes (including the one used by Galileo), microscopes, camera obscuras, and pump drainage systems (credited for draining cambridge and oxford)
He was also a beautiful artist — he made engravings of topless women teaching men science and math (the seven liberal arts). Actually, maybe that's why he was erased? IDK. But he was definitely a free thinker and 100% legit. Look him up.