ALEXANDRIA, Va., Aug. 20 -- United States Patent no. D1,089,391, issued on Aug. 19, was assigned to Yamahachi Chemical Co. LTD (Aichi, Japan).
"Roller stamp" was invented by Yasuhiro Toyama (Aichi, Japan).
The patent was filed on July 3, 2023, under Application No. D/521,529.
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