ALEXANDRIA, Va., June 17 -- United States Patent no. 12,317,053, issued on May 27, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Double-sided sound device" was invented by Xiaoqiong Feng (Changzhou, China), Sheng Ren (Changzhou, China) and Xuedong Lv (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A double-sided sound device includes a first vibration system, a second vibration system, and a magnetic circuit system, and the second vibration system is disposed at a lower side of the first vibration system. The magnetic circuit system includes an inner magnet part, an outer magnet part, and non-magnetically conductive connectors. The inner magnet part includes a first...