The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 6097809 | Adjustable telephone headset A telephone headset including a boom microphone, a earphone, and an ear support constructed and arranged to be adjustable and comfortable for a wearer. The headset is configured with an adjustable ear support to fit a variety of ear sizes without affectin... | 08/01/2000 |
| 5446788 | Adjustable telephone headset A telephone headset including a boom microphone, a earphone, and an ear support constructed and arranged to be adjustable and comfortable for a wearer. The headset is configured with an adjustable ear support to fit a variety of ear sizes without affectin... | 08/29/1995 |