ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,468,503, issued on Nov. 11, was assigned to GUANGDONG DINGCHUANG SMART MANUFACTURING Co. LTD. (Dongguan, China).
"Sound card" was invented by Jun Lu (Guangdong, China), Hong Zhou (Guangdong, China), Weirong Li (Guangdong, China) and Shangjing Li (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sound card includes a shell, a control assembly, a light-emitting assembly and a light guide structure. The shell provided with an accommodating chamber. The control assembly includes a first circuit board arranged in the accommodating chamber. The light-emitting assembly arranged in the accommodating chamber and electrically connected to the fir...