A patent was received for Ole Kirk Christiansen’s LEGO plastic bricks.
Source
Inventor Robert Fulton tested his 66-foot long boat on River Seine in Paris, France.
Inventor Otis Tufts patented the first elevator in the US.
Karl Benz patented the gasoline-operated motor car.
Thomas Edison demonstrated his hand-cranked phonograph for the first time.
German inventor Ferdinand von Zeppelin granted a patent for the navigable balloon.
