William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 6484434 | Emergent lip fishing lure A fishing lure comprising a body having a nose, a tail and a horizontal center line. There is an emergent lip of an inverted trapezoidal shape attached to the body. The emergent lip is adjacent to the nose of the body at approximately a 45° angle to the ... | 11/26/2002 |