ALEXANDRIA, Va., June 5 -- United States Patent no. D1,070,969, issued on April 15, was assigned to Ningbo SKL International Co. LTD. (Ningbo, China).
"Roller stamp" was invented by Lingfeng Zhu (Ningbo Clty, China).
The patent was filed on June 23, 2024, under Application No. D/948,751.
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