ALEXANDRIA, Va., Aug. 12 -- United States Patent no. D1,088,215, issued on Aug. 12, was assigned to Shenzhen Yunde Technology Co. Ltd. (Shenzhen, China).
"Noise reduction earplug" was invented by Dehua Guo (Shenzhen, China) and Jinniu Yuan (Tai'an, China).
The patent was filed on July 24, 2024, under Application No. D/953,787.
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