ALEXANDRIA, Va., Aug. 26 -- United States Patent no. D1,090,649, issued on Aug. 26.
"Laser engraving machine" was invented by Hongwei Geng (Shenzhen, China), Qichuan Xu (Shenzhen, China) and Guihua He (Shenzhen, China).
The patent was filed on April 21, 2023, under Application No. D/874,625.
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