ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,592, issued on April 29, was assigned to SHENZHEN SHOKZ Co. LTD. (Shenzhen, China).
"Acoustic output apparatus" was invented by Liwei Wang (Shenzhen, China), Lei Zhang (Shenzhen, China) and Fengyun Liao (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure discloses an acoustic output apparatus. The acoustic output apparatus may include at least one acoustic driver, a housing structure, and at least two sound guide holes. The at least one acoustic driver may output sounds having opposite phases from the at least two sound guide holes. The housing structure may be configured to carry the at least one acoustic driver. T...