1840
1840
1840
bob
He invented Transport Quizzes for the Mothers' Union !
The first hockey stick was invented in 1840.
The first electric clock was invented by Alexander Bain in 1840.
He invented the Blueprint in 1840.
The Penny Black was invented in the year 1840 in memory of QUEEN VICTORIA
It was first invented by Sir Charles Wheatstone in 1840
John Gorrie
George Boole invented it sometime in the 1840's.