ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,490, issued on March 24.
"Digital placard" was invented by Randy Patin (Covington, Ga.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The digital placard is a sign for use with an intermodal freight container. The digital placard visibly displays hazard warnings from the intermodal freight container. The digital placard visibly displays a hazard warning image selected from one or more hazard warning images that are consistent with the hazard warning images required by the CMCSA regulations. The digital placard incorporates a frame structure and a display circuit. The display circuit mounts in the frame structure. The display circuit is an electric ...