ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,211,399, issued on Jan. 28.
"Modular sign board with emergency warning system" was invented by Gaurav Batta (Scottsdale, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An address sign can consist of a rectangular enclosure with removable, illuminated alphanumeric characters attached to the front of the enclosure, an electronic control module positioned inside the enclosure, wherein the electronic control module includes a wireless communication unit configured to communicate with a series of electronic devices within a geographical area, and the electronic control module is configured to transmit signals to the illuminated alphanumeric characters....