In 1821, an African American business owner named Thomas Jennings invented the dry cleaning process and was one of the first African Americans to be granted a patent. He used the proceeds from his invention to buy his wife and children out of slavery. – WTF Fun Facts
Source: https://en.wikipedia.org/wiki/Thomas_L._Jennings
A Volvo engineer invented and patented the three-point seatbelt in 1959. As a new safety measure, it was so significant that they opened up the patent to other automakers to help save lives instead of trying to profit from it. – WTF Fun Facts
The Ouija board was granted a patent because the owner took the board to the US patent office and it spelled out the chief patent officer’s name.
– WTF Fun Facts
