Isaac R. Johnson received his patent for the bicycle frame.
Source
The lie detector, invented in 1921 by John Augustus Larson, was first used in the Netherlands.
Robert Goddard was granted a patent for the rocket-powered aircraft.
Inventor Fred Waller patented the aquaplane, which would become water skis.
A patent was awarded to Willis Carrier, which gave us the world’s first Air Conditioner.
Amateur British chemist Sir James Jay invented invisible ink.
