ALEXANDRIA, Va., March 19 -- United States Patent no. 12,250,983, issued on March 18, was assigned to Ningbo Huaqia Electronic Technology Co. Ltd. (Ningbo, China).
"Buckle type earmuff" was invented by Hongyan Qian (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present utility model discloses a buckle type earmuff, comprising two ear-wrapping covers with connecting buckle plates on their outer side walls and a wearing band mounted between the two connecting buckle plates. Embodiment 1: when worn by an adult, the distance on the elastic plate can be adjusted by pulling the two connecting buckle plates. After adjustment, the clamping block and buckle secure the two ear-wrapping covers to the...