Chewing Gum
On 28 December 1869, William Finley Semple (1832-1923) a dentist from Ohio, filed a patent (number 98,304) on chewing gum.However, five months earlier Amos Tyler had already received a patent for a gum consisting of white rosin (pine resin) and olive oil, heated and mixed. Semple’s gum was made out of rubber dissolved in naphtha and alcohol, added with powdered chalk, powdered licorice root, and…
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