Hymen L. Lipman of Philadelphia, Pa (above) is credited with registering
the first patent for a pencil with an attached eraser (pic below). In 1862
Lipman sold his patent for $100,000.
Hymen L. Lipman of Philadelphia, Pa (above) is credited with registering
the first patent for a pencil with an attached eraser (pic below). In 1862
Lipman sold his patent for $100,000.
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