Joke Collection Website - Bulletin headlines - Who invented the pencil sharpener?
Who invented the pencil sharpener?
Bernard Laasimo, a French mathematician, applied for the patent of the first pencil sharpener in KLOC-0/828. 1847, Therry des Estwaux invented the automatic pencil sharpener, and the appearance of the electric pencil sharpener can be traced back to at least 19 17 years.
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