Hoff v. Iron Clad Mfg. Co.
139 U.S. 326 (1891)

Annotate this Case

U.S. Supreme Court

Hoff v. Iron Clad Mfg. Co., 139 U.S. 326 (1891)

Hoff v. Iron Clad Manufacturing Company

No. 225

Argued March 18, 1891

Decided March 30, 1891

139 U.S. 326

APPEAL FROM THE CIRCUIT COURT OF THE UNITED

STATES FOR THE SOUTHERN DISTRICT OF NEW YORK

Syllabus

In view of the previous state of the art, the first claim in letters patent No. 279,871, issued June 19, 1883, to Charles Hoff of Cincinnati for an improvement in coal hods, must be limited to the entire bottom of the crimped material and the resultant increase in its thickness, and, being so limited, it is not infringed by a coal hod made after letters patent No. 304,033, granted August 26, 1884, to Henry S. Reynolds.

Whether both patents were not void for want of novelty, quaere.

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