ALEXANDRIA, Va., June 16 -- United States Patent no. 12,309,630, issued on May 20, was assigned to American Messaging Services LLC (Lewisville, Texas).

"Messaging devices and methods" was invented by John F. Nagel (Southlake, Texas), J. Roy Pottle (Wellesley, Mass.), Peter C. Barnett (Mason, Ohio), David Andersen (Dillon, Colo.), Jamie Gordon Nichol (Arlington, Mass.) and Sangsoo Kim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic messaging device includes a receiver configured to receive a message at one of a first operational frequency and second operational frequency. The messaging device can operate using a time synchronous protocol and can receive commands through over-t...