ALEXANDRIA, Va., July 9 -- United States Patent no. 12,356,172, issued on July 8, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Loudspeaker" was invented by Li Ren (Changzhou, China) and Chao Zhang (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a loudspeaker, which includes a frame, a first diaphragm supported on the frame, a first voice coil that drives the first diaphragm to vibrate and sound, a magnetic circuit system with a first magnetic gap, and a first circuit board set between the first diaphragm and the first voice coil. Compared with the related technology, the loudspeaker of the present disclosure guarantees the reliabilit...