ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,414, issued on April 21, was assigned to INVENTIO AG (Hergiswil, Switzerland).

"Control system assembly for MRL-elevator" was invented by Axel Hosemann (Auw, Switzerland), Christian Studer (Kriens, Switzerland), Donato Carparelli (Lugano, Switzerland), Erich Butler (Ebikon, Switzerland) and Patrick Isenegger (Meggen, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A control system for an elevator is separated into a first assembly allocated outside and a second assembly allocated inside an elevator shaft. The first assembly includes a power switch for turning on/off the control system, a light switch for switching a light inside the shaf...