ALEXANDRIA, Va., June 19 -- United States Patent no. 12,335,711, issued on June 17, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Multifunctional sounding device" was invented by Xin Jin (Changzhou, China), Fan Zhang (Changzhou, China), Ronglin Linghu (Changzhou, China) and Wei Song (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a multifunctional sounding device, which includes a housing body with a containment space, and a sounding unit. The housing body is provided with a sound outlet. The sounding unit includes a frame, a vibration system, and a magnetic circuit system. The multifunctional sounding device also includes a motor ass...