ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,452,580, issued on Oct. 21, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).
"Speaker box and electronic device" was invented by Li Ren (Changzhou, China) and Chaoyuan Li (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A speaker box and an electronic device are disclosed. The speaker box includes an upper cover plate including side walls, a first lower cover plate, a speaker unit, a motor module, and second lower cover plates. The speaker unit divides an accommodating cavity defined by upper cover plate and first lower cover plate into front and back cavities. The second lower cover plates are assembled with the up...