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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 of patents: 1
Last date: April 28, 1992

Number	Title	Issue Date
5107641	Ceramic brick A weldable abrasion resistant ceramic brick is formed with spaced recesses extending angularly into the brick to undercut a surface thereof and interlock with a weldable insert having angularly extending projections mating with and insertable into the rec...	04/28/1992