US Patent Issued to SCHAEFER on May 20 for "System for transport of the user with an elevator to a destination, retrofit set and method" (German Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,774, issued on May 20, was assigned to SCHAEFER GMBH (Sigmaringen, Germany).

"System for transport of the user with an elevator to a destination, retrofit set and method" was invented by Marcus von Roda (Ruhla, Germany) and Jan Panier (Erfurt, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system (10) is provided comprising a first communication unit (KE1), a second communication unit (KE2) and a third communication unit (KE3). The first communication unit (KE1) is mobile and can be carried by a user (B). The second communication unit (KE2) is configured to be installed in a stationary manner, preferably near an elevator shaft door (11). T...