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 |
| 8136685 | Device for closing a barrel or the like A sealing device for a barrel or the like, the barrel including an opening (22) arranged especially at the level of at least one bottom (14), characterized in that it includes, on the one hand, an attachment ring (24) located on the periphery of... | 03/20/2012 |
| 4362035 | Lockable closure A shield is rotatably mounted to a threaded element of the closure on an axis coincident with the axis of the threaded element, so that the shield impedes access to the threaded element. The shield can be removed from the threaded element or connected to ... | 12/07/1982 |