ALEXANDRIA, Va., April 7 -- United States Patent no. D1,121,470, issued on April 7, was assigned to Shenzhen Hansway Technology Co. Ltd. (Shenzhen, China).
"Carbon monoxide gas composite alarm" was invented by Ling Kong (Shenzhen, China).
The patent was filed on May 10, 2025, under Application No. D/003,146.
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