The Wright Brothers were granted a patent for their “flying machine” after applying for it three years earlier.
Source
Isaac R. Johnson received his patent for the bicycle frame.
After encountering many difficulties, Nathan Stubblefield was finally granted a US patent for his new version of a wireless telephone.
The Safety Hood, which would later become the gas mask, was patented by Garrett Morgan.
The Soviet Union started mass producing the AK-47 assault rifle.
Willis Carrier invented the world's first electronic air conditioner.
