ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,532,121, issued on Jan. 20, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Speaker device and stylus" was invented by Zhang Ren (Changzhou, China), Zhiwei Zhong (Changzhou, China) and Wei Song (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application provides a speaker device and a stylus, and the speaker device includes: a first frame, a first vibration system, a magnetic circuit system, a second frame, and a second vibration system. The magnetic circuit system includes a first splint, a first magnetic steel unit, a second splint, a center splint, and a second magnetic steel unit; at least part of...