ALEXANDRIA, Va., June 17 -- United States Patent no. D1,076,801, issued on May 27, was assigned to Xiamen Retone Hearing Technology Co. Ltd. (Xiamen, China).
"Charging box" was invented by Yiquan Shi (Xiamen, China) and Chengxiang Zhang (Xiamen, China).
The patent was filed on Jan. 19, 2023, under Application No. D/882,794.
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