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pencil drawing female portrait
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Pencil Drawing Female Portrait

Eraser attached
On 30 March 1858, Hymen Lipman received the first patent for attaching an eraser to the end of a pencil. In 1862 Lipman sold his patent to Joseph Reckendorfer for $100,000, who went to sue the pencil manufacturer Faber-Castell for infringement. In 1875, the Supreme Court of the United States ruled against Reckendorfer declaring the patent invalid.

File information
Filename:279283.jpg
Album name:Art & Creativity
Rating (1 votes):55555
Keywords:#pencil #drawing #female #portrait
Filesize:74 KiB
Date added:Jun 08, 2010
Dimensions:700 x 550 pixels
Displayed:10 times
URL:displayimage.php?pid=279283
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