ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,771,976, issued on Oct. 20, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou City, China).
"Speaker box" was invented by Xin Jin (Changzhou, China), Wei Song (Changzhou, China), Yun Tang (Changzhou, China), Xinyu Zhou (Changzhou, China) and Suntong Zhou (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure discloses a speaker box including a housing having an upper cover and a bottom cover enclosed a receiving space; a speaker unit received in the receiving space, including: a holder mounted on the upper cover; a vibration system mounted on the holder, including: a diaphragm and a coil; a magnet system, inc...