ALEXANDRIA, Va., Aug. 18 -- United States Patent no. D1,142,532, issued on Aug. 18, was assigned to Shanghai Wanfeng Environmental Protection Technology Co. Ltd. (Shanghai).
"Badge maker" was invented by Renwu Liu (Shanghai) and Weiwei Qian (Shanghai).
The patent was filed on Oct. 25, 2024, under Application No. D/970,040.
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