ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,452,608, issued on Oct. 21, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Double-sided speaker device" was invented by Yiming Meng (Changzhou, China), Wei Liu (Changzhou, China), Peilin Yang (Changzhou, China) and Yanhao Feng (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A coaxial double-sided speaker device includes a frame, first and second vibration units fixed to two opposite sides of the frame, a magnetic circuit unit, and a front cover fixed to the frame and provided under the first diaphragm. The first vibration unit includes a first diaphragm fixed to the frame and a first voice coil. The second vibra...