ALEXANDRIA, Va., June 9 -- United States Patent no. D1,073,121, issued on April 29, was assigned to Guangzhou Soundbox Acoustic Technology Co. Ltd. (Guangzhou, China).

"Movable silence booth" was invented by Yimin Yin (Guangzhou, China), Zude Liu (Guangzhou, China) and Fanqi Tang (Guangzhou, China).

The patent was filed on March 11, 2022, under Application No. D/792,198.

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