Inventor Elisha Otis acquired a patent for a steam engine for elevators.
Source
Earmuffs were patented.
American businessman King Camp Gillette was granted his patent for the safety razor.
Inventor George Eastman patented his 35mm photographic film in the US.
Barbed wire was patented by Lucien B Smith in Ohio, US.
Willis Carrier invented the world's first electronic air conditioner.
