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 |
| 3999678 | Closing arrangement for packing containers A closing arrangement made of plastic material for packing containers includes a tubular part which is anchored in an opening provided in the pour opening of the container and a cap member attached to the tubular part at one side and which includes a pull... | 12/28/1976 |
| 4000325 | Packing container intended for pressurized contents In a pressurized packing container having an inner tubular container of plastic material and an outer casing of non-elastic material, which tubular container, after being filled, is to be sealed off along two transverse seals spaced from one another, an i... | 12/28/1976 |
| 3992857 | Arrangement for capping machines A capping machine of the rotary type for closing filled bottle type packing containers for beer or other liquids which are made from a plastic material includes a lower wheel on which the bottles to be capped are placed and an upper wheel which supports c... | 11/23/1976 |
| 3982029 | Package intended for pressurized contents A package for pressurized material comprises an inner container of plastics and a shell of non-extensible material. The plastics inner container is in the form of a tube, and is sealed along two seals spaced from each other, the length of the seals is gre... | 09/21/1976 |