ALEXANDRIA, Va., July 21 -- United States Patent no. D1,136,220, issued on July 21, was assigned to Henan Huanzhong Network Technology Co. Ltd. (Zhengzhou, China).

"Tens device" was invented by Xutao Teng (Ruzhou, China).

The patent was filed on March 31, 2025, under Application No. D/996,091.

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