ALEXANDRIA, Va., June 19 -- United States Patent no. 12,335,706, issued on June 17, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Multifunctional sound device" was invented by Yun Tang (Shenzhen, China), Lubin Mao (Shenzhen, China), Jie Ma (Shenzhen, China), Ziang Li (Shenzhen, China), Xingzhi Huang (Shenzhen, China) and Wei Song (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multifunctional sound device includes a housing, a sound unit, a vibrator, and coils. The housing includes an accommodating cavity, and the sound unit is accommodated in the accommodating cavity and is fixedly connected to the housing. The sound unit includes a frame, a vibration system, and ...