ALEXANDRIA, Va., Feb. 12 -- United States Patent no. D1,061,643, issued on Feb. 11, was assigned to SUMITOMO ELECTRIC HARDMETAL CORP. (Itami, Japan).
"Drill" was invented by Yusuke Makiuchi (Itami, Japan).
The patent was filed on June 1, 2022, under Application No. D/840,780.
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