Caster Technology - ✏️ French mathematician Bernard Lassimonne went through a lot of pencils very fast and he hated sharpening them with a knife. In 1828, he filed a French patent for
The Invention of the Pencil Sharpener
Pencil Sharpeners timeline | Timetoast timelines
They Come From France
Pencil sharpener - Wikipedia
The Invention of the Pencil Sharpener
Lamaisonnette_bilingual preschool on Twitter: "The development of pencil sharpeners began in France, In 1828 by French mathematician, Bernard Lassimonne who patented the first pencil sharpener. It had small metal files set at