ALEXANDRIA, Va., July 28 -- United States Patent no. 12,694,771, issued on July 28, was assigned to Pfanner Schutzbekleidung GmbH (Koblach, Austria).
"Information sign unit, warning system and method for operating a warning system" was invented by Anton Pfanner (Hohenems, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "An information sign unit includes at least one motion sensor, which detects movements of objects in the environment of the information sign unit, and at least one signal device for outputting different optical and/or acoustic signals. Different optical and/or acoustic signals depends on whether the motion sensor has detected a movement of an object in the environment of the information ...