ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,211,378, issued on Jan. 28.
"Visual warning assembly" was invented by David Mark Stewart (Birchwood, Tenn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A visual warning system for transmitting a signal from a first user to a second user. The system includes a first and second visual warning assembly. Each visual warning assembly includes a case having a base and a front face and an enclosed space within the case. Each visual warning assembly also includes an antenna and a lighted button configured to illuminate and de-illuminate. Finally, each visual warning assembly includes a microcontroller disposed within the enclosed space and electrically couple...