ALEXANDRIA, Va., July 14 -- United States Patent no. 12,684,274, issued on July 14, was assigned to AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) Co. LTD. (Shenzhen, China).

"Smart wearable device" was invented by Junhao Yuan (Shenzhen, China), Zhongping Lai (Shenzhen, China) and Hongyan Tao (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a smart wearable device includes a glass frame and two temples. Each temple includes a shelf, a cover plate, and a speaker. The speaker includes a first and a second sounding surface. The shelf includes an upper wall, a lower wall, and an outer wall. The upper wall has a first sound hole, the lower wall has a second sound hole, the oute...