The braille system was invented in 1821.
Louis Braille invented braille in 1824
he invented it when he invented braille.
perpetual watch
The wrist watch was invented by Louis Cartier and Hans Wilsdorf in 1904. Cartier still makes some of the best and most expensive watches in the world.
what year did Granville T. Woods invent the transmitter
The Greeks did not invent pizza.
he did not invent it
He did not invent the car. He designed it in 1947.
Albert Einstein did not invent mathematics.
1707
2000
1970