Pickering v. McCullough
104 U.S. 310 (1881)

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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

Syllabus

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.

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