ALEXANDRIA, Va., June 12 -- United States Patent no. D1,074,757, issued on May 13, was assigned to Furukawa Rock Drill Co. Ltd. (Tokyo).
"Construction machine" was invented by Naoya Chiba (Gunma, Japan) and Tomoya Nagata (Gunma, Japan).
The patent was filed on July 13, 2023, under Application No. D/879,887.
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