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 |
| 6543202 | Device for welding and/or combined cutting and welding of films A device for welding or combined cutting and welding comprises a heating element, the heating rail of which is heated and cools down in each work cycle, and an opposed tool which has a rail made of elastic material.... | 04/08/2003 |
| 6241458 | Stacker for grouping and stacking substantially flat articles A stacker for stacking articles, particularly blister packs, into stacks of goods, including a goods feeder, a primary packing unit and a unit for supplying the stacks for secondary packing or processing. The packing unit has a goods magazine with a goods... | 06/05/2001 |