ALEXANDRIA, Va., June 12 -- United States Patent no. D1,074,749, issued on May 13, was assigned to Shenzhen Ruilianhai Electronics Co. Ltd (Shenzhen, China).
"Sleep sound machine" was invented by Zhonghai Luo (Shenzhen, China).
The patent was filed on April 24, 2024, under Application No. D/939,030.
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