U.S. Supreme Court
Pickering v. McCullough, 104 U.S. 310 (1881)
Pickering v. McCullough
104 U.S. 310
APPEAL FROM THE CIRCUIT COURT OF THE UNITED
STATES FOR THE WESTERN DISTRICT OF PENNSYLVANIA
1. Reissued letters patent No. 6166, granted Dec. 8, 1874, to George Nimmo, for "an improvement in molding crucibles " are void, the invention therein described being neither patentable nor novel.
2. A combination of old elements is not patentable unless they all so enter into it as that each qualifies every other. It must either form a new machine of distinct character and function or produce a result which is not the mere aggregate of separate contributions, but is due to the joint and cooperating action of all the elements.