ALEXANDRIA, Va., Sept. 24 -- United States Patent no. D1,148,740, issued on Sept. 22, was assigned to Shenzhen hangrui hechuang Technology Co. Ltd (Shenzhen, China).
"Car subwoofer" was invented by Kundong Liu (Shanghai).
The patent was filed on May 26, 2024, under Application No. D/944,145.
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