ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,719,973, issued on Aug. 25, was assigned to AAC Technologies (Nanjing) Co. Ltd. (Nanjing, China).
"Portable device" was invented by Lubin Mao (Nanjing, China), Yulei Zhang (Nanjing, China), Lijin Zhang (Nanjing, China), Yun Tang (Nanjing, China), Yajun Zheng (Nanjing, China) and Jie Ma (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A portable device, including a frame, a button fixed relative to the frame, a connection member fixedly connecting the button to the frame, a sensor for detecting a pressing state of the button, and a vibration motor fixed below the button. The frame has a mounting hole penetrating therethrough; the frame incl...