1921
Elijah McCoy
No one. The hover board is not invented yet.
Martin Heit invented the white board.
It is not known who specifically invented the roller ball bearing. There are examples of their use by the ancient Egyptians. However, it is thought that they may have been invented before the wheel.
Paul Eisler invented the first circuit board in 1936.
In a double suction pump the bearing nearer to the pump coupling (i.e) nearer to the driven end is the in board bearing and the bearing on the other side of the pump is the outboard bearing.
It's already been invented.
Board games were first invented around 5,000 years ago in ancient Egypt.
The first board games were invented in ancient Mesopotamia, which is now modern-day Iraq.
it was probably invented after some teachers complained about markers smudging on the boards or something like that.So David Martin invented the Smart Board!
1868
raymond