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 |
| 7181493 | Platform independent model-based framework for exchanging information in the justice system A platform independent model for exchanging information among numerous entities in a justice system with diverse system components is implemented in a hub and spoke arrangement. Each spoke includes a software agent that communicates with a system component of an ent... | 02/20/2007 |