Haynes Stellite Co. v. Chesterfield

DENISON, Circuit Judge.

This is the usual infringement suit, based upon patent No. 1,057,423, issued April 1, 1913, to Ell-wood Haynes for a metal alloy. The pat ented article in its commercial form is called stellite, and the suit was brought by the manufacturing company, which owns the patent, against the makers of a more or less similar allay, called by the trade-name “Chesterfield.” The District Court thought that the patent sued upon was invalid as to the broader claims, and as to the narrower ones, if valid, was not infringed. Both parties find the utility of their alloys in the field of…