ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,877, issued on Feb. 10, was assigned to TYMPHANY HK Ltd. (Hong Kong, Hong Kong).

"Audio equipment" was invented by Yang Chen (Taipei, Taiwan), Kai-Li Wang (Taipei, Taiwan) and Yi-Ming Wu (Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An audio equipment includes a first air pipe and a second air pipe. The first air pipe includes a first audio inlet, a first audio outlet and a first wall. The first wall extends from the first audio inlet to the first audio outlet. The second air pipe shares the first wall with the first air pipe. The second air pipe includes a second audio inlet and a second audio outlet. The first wall extends from th...