ALEXANDRIA, Va., Sept. 15 -- United States Patent no. D1,148,050, issued on Sept. 15, was assigned to Shanghai KAco industrial Co. Ltd. (Shanghai).
"Pen" was invented by Chengyong Li (Shanghai) and Qingyun Qian (Shanghai).
The patent was filed on Feb. 20, 2025, under Application No. D/524,242.
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