The lie detector, invented in 1921 by John Augustus Larson, was first used in the Netherlands.
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Inventor Frederick E. Blaisdell patented the pencil in the US.
Walter Hunt patented the safety pin.
The Wright Brothers were granted a patent for their 'flying machine' after applying for it three years earlier.
Samuel Morse was granted the patents for his telegraph.
Mary Kies became the first woman ever to acquire a patent.
