ALEXANDRIA, Va., Jan. 13 -- United States Patent no. D1,109,198, issued on Jan. 13, was assigned to Shenzhen TwoTrees Technology Co. Ltd. (Shenzhen, China).
"Laser engraving machine" was invented by Zhitao Zeng (Shenzhen, China) and Rongpeng Huang (Shenzhen, China).
The patent was filed on Jan. 25, 2025, under Application No. D/987,654.
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