ALEXANDRIA, Va., April 2 -- United States Patent no. D1,068,521, issued on April 1, was assigned to Tianyan Zhizao (Guangzhou) Technology Co. (Guangzhou, China).
"Warning light" was invented by Ruiming Liu (Guangdong, China).
The patent was filed on Aug. 5, 2023, under Application No. D/899,172.
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