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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| Application No. | Application Title | Issue Date |
| 20110272058 | Dump chute adaptor and method A dump chute adaptor includes an adaptor housing having a housing interior and a conduit coupling carried by the adaptor housing and disposed in fluid communication with the housing interior.... | 11/10/2011 |