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 |
| 7343634 | Foldable frame structure for a children's play-yard A frame structure for a foldable children play-yard adaptable to include a curve side rail to form at least a portion of its upper perimeter. The frame structure comprises a plurality of support members, an upper frame member and a lower frame member. The upper fram... | 03/18/2008 |
| 7006530 | Method and system for adaptively obtaining bandwidth allocation requests A method and apparatus for adaptively obtaining bandwidth requests in a broadband wireless communication system. The method and apparatus includes dynamically varying technique combinations enabling a plurality of users to efficiently request bandwidth from a shared... | 02/28/2006 |