ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,142, issued on April 14, 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, including a housing body with a containment space and a sounding unit accommodated in the containment space. The sounding unit includes a frame, a vibration system, and a magnetic circuit system. The sounding device further includes a motor assembly accommodated in the con...