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 |
| 7382249 | Security motion sensor and video recording system A combined alarm and surveillance system integrates an existing alarm system (12) with an existing surveillance system (14) such that functions unique to each system are combined in a complementary manner. The existing alarm and surveillance systems ar... | 06/03/2008 |