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Rubber-Tip Pencil Co. v. Howard (87 U.S. 498, 1874)


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[USEFUL] {1} An idea of itself is not patentable, but a new device by which it may be made practically useful is. The idea of this patentee was a good one, but his device to give it effect, though useful, was not new. Consequently he took nothing by his patent.


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