ALEXANDRIA, Va., Dec. 9 -- United States Patent no. D1,105,107, issued on Dec. 9, was assigned to DONGGUAN HABOTEST INSTRUMENT TECHNOLOGY Co. LTD. (Dongguan, China).
"Voltage tester pen having a display screen with graphical user" was invented by Xiaofeng Yang (Shenzhen, China).
The patent was filed on Dec. 29, 2023, under Application No. D/923,375.
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