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Hymen Lipman
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Hymen L. Lipman is credited with registering the first patent for a pencil with an attached eraser on March 30, 1858 ().
In 1862 Lipman sold his patent to Joseph Reckendorfer for $100,000, who went to sue the pencil manufacturer Faber for infringement. In 1875 the Supreme Court of the United States ruled against Reckendorfer declaring the patent invalid because his invention was actually a combination of two already known things with no new use.
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Last updated on Tuesday January 22, 2008 at 08:06:30 PST (GMT -0800)
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This article is licensed under the GNU Free Documentation License.
Last updated on Tuesday January 22, 2008 at 08:06:30 PST (GMT -0800)
View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation
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