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 |
| 20090072270 | Low voltage transistors The invention provides a transistor having a substrate, a structure supported by the substrate including a source, drain, gate, and channel, wherein the source and the channel are made of different materials, and a tunnel junction formed between the source and the chann... | 03/19/2009 |