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 |
| 6633788 | Data processing method and system A data processing method and a computer based data processing system for use in providing, or optimising, an industrial procedure for generating a product. The system comprising digital processing means, and digital storage means. The storage means having... | 10/14/2003 |