Edna Brass Mfg. Co. v. Wiltbonco Mfg. Co.

ANDERSON, Circuit Judge.

In this suit, brought for infringement of the Mauger patent, No. 1,036,289, the defendant prevailed in the court below.

*37For some years prior to this controversy the plaintiff and defendant had been competing manufacturers of reflex water gauges, used with steam boilers, chiefly on boilers of locomotive engines The pioneer invention as to such gauges was that of Klinger, patented in 1892. This patent covered a glass through which the line dividing the water from the steam was made clearly visible by making the inner face of the glass with longitudinal facets, causing a…