Metal Cutting Tool Service v. National Tool Co.

SIMONS, Circuit Judge.

The bill filed by the appellant charging infringement of patent No. 1,463,473 to Lapointe for a broaching tool was dismissed in the court below because of non-infringement. Decision in respect to certain assailed structures of the defendant was based upon a construction giving limited scope to the claims in suit, and in respect to another structure it was held that the appellant having induced its manufacture was not entitled to equitable relief.

A broaching tool or broach is used in cutting and shaping metal parts, and is generally provided with a plurality of teeth…