Yale Lock Manufacturing Company v. Sargent
117 U.S. 373 (1886)

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U.S. Supreme Court

Yale Lock Manufacturing Company v. Sargent, 117 U.S. 373 (1886)

Yale Lock Manufacturing Company v. Sargent

Argued March 15-16, 1886

Decided March 29, 1886

117 U.S. 373


The feature of varying eccentricity in the rollers is an essential part of the invention protected by letters patent No. 98,622 granted to James Sargent, January 4, 1870, for an improvement in permutation locks.

The case is stated in the opinion of the Court.

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