Hirsch v. Union Stoveworks

Citations

• 126 F. 189
• 1903 U.S. App. LEXIS 5150

Syllabus

<p>1, Patents — Infringement—Gas or Oil Burners.</p> <p>The Fennessy patent, No.. 424,964, claim 2, for a central draft oil or gas burner, the inner and outer walls of the flame chamber of which are formed of cylinders provided with perforations of approximately one-sixteenth inch diameter, distributed 20 to the square inch, or the equivalent, in view of the prior art, covers only the proportion of the area of perforations to area of cylinder, and, if valid, is not infringed by a burner in which such proportion is greatly different from that stated in the patent.</p>