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Dr. Heinrich Hertz
abraham kamen
by whom binary is invented
by whom octal is invented
by Hugh Janus in 1988
By Alexander Parkes in the 1850's and it was first called Parkesine
There are no records of whom or where the lever was invented
First mobile phone 📱 was invented by Martin Cooper on 3rd April 1973. He was a researcher in Motorola.
it was invented by aruthur adresonin1804
it was invented around 200BC by Hipparchus
it was invented by a dude named poo