ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,469,376, issued on Nov. 11, was assigned to ETO MAGNETIC GmbH (Stockach, Germany).

"Distance-determining system, contact-monitoring system, contact-tracking system and method for determining distance and/or tracking contact" was invented by Lutz Dittrich (Immenstaad, Germany) and Walter Naumann (Immenstaad, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A distance-determining system, in particular a distance-monitoring system, preferably a unidirectional distance-monitoring system, with at least one first monitoring unit and with at least one second monitoring unit, wherein at least the first monitoring unit includes a transmitter unit that is c...