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 |
| 7020696 | Distributed user management information in telecommunications networks The present invention provides a method and apparatus for implementing distributed user management information in telecommunications networks. At least a portion of a user's management information is stored in a team session file that is accessible by a network mana... | 03/28/2006 |