Double Use
Bouvier's Law Dictionary and Concise Encyclopedia · John Bouvier; revised by Francis Rawle · 1914
Bouvier's Law Dictionary and Concise Encyclopedia
A term used in patent law to indicate that a later device is merely a new application of an older device, not involving the exercise of the inventive faculty. In construing letters patent for new applications of old devices, if the new use be so nearly analogous to the former one that it would occur to a person of ordinary mechanical skill, it is only a case of double use; but if the relations between them are remote, and especially if the use of the old device produce a new result, it may involve an exercise of the inventive faculty — much depending upon the nature of the changes required to adapt the device to its new use; Potts v. Creager, 155 U. €.
597, 15 Sup. Ct. 194, 39 L. Ed. 275.
See Patent.
See Patent.