ALEXANDRIA, Va., July 16 -- United States Patent no. D1,083,644, issued on July 15, was assigned to Shenzhen Heiman Technology Co. Ltd. (Shenzhen, China).
"Combustible gas alarm" was invented by Jian Bo Xie (Shenzhen, China).
The patent was filed on Sept. 14, 2023, under Application No. D/902,550.
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