ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,387,633, issued on Aug. 12.
"Electric sign device" was invented by Major Roy Schuetz (McKinney, Texas) and Kelly Jo Schuetz (McKinney, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric sign device can include a backboard; first and second metal strips attached to the backboard; a plurality of LED assemblies, each LED assembly comprising: a board; first and second metal contacts attached to a first side of the board; first and second magnets attached to the first and second metal contacts, respectively; the first and second metal contacts contacting the first and second metal strips, respectively; a plurality of LEDs disposed on a second s...