ALEXANDRIA, Va., Aug. 18 -- United States Patent no. D1,142,648, issued on Aug. 18, was assigned to NAKAYAMA PRECISION METALLIC PRODUCTS (SHEN ZHEN)Co. LTD (Shenzhen, China).

"Pen" was invented by Hiroki Imai (Shenzhen, China) and Jianhua Chen (Shenzhen, China).

The patent was filed on Dec. 23, 2024, under Application No. D/980,304.

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