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 |
| 7071083 | Method of fabricating polysilicon film by excimer laser crystallization process A method of fabricating a polysilicon film by an excimer laser crystallization process. First, a substrate comprising a first region and a second region is provided. An amorphous silicon layer and a mask layer are formed on the substrate in sequence. Then, a photo-e... | 07/04/2006 |
| 6031444 | Connector-integrated coil apparatus A connector-integrated coil apparatus that includes a stress-absorbing elbow segment that minimizes the chance of coil breakage. A fusing portion of a coil terminal wire and a terminal is located within a coupler rather than the interface between a metal ... | 02/29/2000 |
| 5219221 | Lamp retainer of light source device for endoscope A lamp retainer of a light source device, which retains a light source lamp that has two electrodes, at least one of them being on the side thereof. The lamp retainer comprises an electrically conductive heat sink, and an electrically conductive electrode... | 06/15/1993 |