ALEXANDRIA, Va., July 3 -- United States Patent no. 12,347,411, issued on July 1, was assigned to CASIO COMPUTER Co. LTD. (Tokyo).
"Electronic keyboard instrument" was invented by Hirokatsu Katoh (Kawasaki, Japan) and Hiroki Akai (Hino, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic keyboard instrument includes a keyboard provided on a player's side, a case including a back panel including a first sound radiation hole portion, an upper panel provided contiguously with the back panel, and a keyboard installation portion disposed in such a manner as to correspond to the keyboard, a speaker disposed in such a manner as to correspond to the first sound radiation hole portion, and a magnetic s...