Elevator Supplies Co. v. Boedtcher

WOOLLEY, Circuit Judge.

Referring to the parties in the singular number and as they stood in the trial court, the plaintiff brought separate suits against the defendant for infringement of three patents. They were consolidated for trial and on findings of noninfringement in one opinion three decrees were entered dismissing the bills of complaint. These appeals followed.

Many patents are involved; but three are in suit. All relate to the highly technical and now highly developed art of electric signalling apparatus and circuits, familiar in their operative results to every one who rides in hotel…