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 |
| 4810028 | Crashable automobile frame A vehicle having a frame designed to reduce the damage caused by collisions between vehicles. The design of the frame has a cone shaped front and rear, with the point of the cone low to the ground to get under and lift the other vehicle in the event the f... | 03/07/1989 |