Sharp v. Riessner,
119 U.S. 631 (1887)

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U.S. Supreme Court

Sharp v. Riessner, 119 U.S. 631 (1887)

Sharp v. Riessner

Argued December 16, 1886

Decided January 10, 1887

119 U.S. 631


The first claim of letters patent No. 177,334, granted to Abner B. Hutchins, May 16th, 1876, for an improvement in hydrocarbon stoves, namely,

"1. The water vessel A, with its perforated top plate A' and hot air 'cylinder' C, hinged at c to plate A', and top perforated plate L, all arranged and connected together substantially as and for the purpose set forth,"

the perforated top plate A' being described in the specification as a plate in which arranged around a central opening is a series of perforations "through which atmospheric air passes down into the top part of the vessel A and thence up through the hot air cylinder and its chimneys," is not infringed by a stove in which, instead of the perforated top plate A', there are three equidistant struts on which the hot air cylinder rests, with an open space between every two of the struts, the struts not performing the office so described as that performed by the perforated top plate A'.

This was a bill in equity for the infringement of letters patent. The case is stated in the opinion of the Court.

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