The Monopoly game was invented by Charles Darrow in 1933. He sold the rights to George Parker in 1935, then aged 58. Parker invented more than 100 games, including Pit, Rook, Flinch, Risk and Clue.
The hair perm was invented in 1906 by Karl Ludwig Nessler of Germany.
Leonardo da Vinci never built the inventions he designed.
During the 1860s, George Leclanche developed the dry-cell battery, the basis for modern batteries.
In 1894 Thomas Edison and W K L Dickson introduced the first film camera.