When was the pencil sharpener invented?
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The first patent for a mechanical pencil sharpener was granted to Walter K. Foster of Bangor, Maine, in 1855. Foster’s invention was a hand-cranked device that rotated the pencil against a blade to create a sharp point.
When was the pencil sharpener invented?
- 1850
- 1880
- 1910
- 1840
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