ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,439,208, issued on Oct. 7, was assigned to SUZHOU LI YUE MUSICAL INSTRUMENTS Co. LTD. (Suzhou, China).

"Full-frequency band high quality planar resonance speaker with a bar and sound tunnels" was invented by Haiou Jin (Suzhou, China), Nianbo Wu (Suzhou, China), Xinxi He (Suzhou, China), Xinzhi Zhu (Suzhou, China), Biying Li (Suzhou, China) and Ping Yang (Suzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A full-frequency band high quality planar resonance speaker with a bar and sound tunnels includes a planar diaphragm, whose outer edge is connected to the outer frame of the speaker through an elastic connector; a sound source is arranged in th...