ALEXANDRIA, Va., Sept. 30 -- United States Patent no. D1,149,992, issued on Sept. 29, was assigned to Changsha Duolayu Technology Co. Ltd. (Changsha, China).
"Intelligent switch" was invented by Hongxia Liu (Hunan Province, China).
The patent was filed on Nov. 14, 2025, under Application No. D/032,838.
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