ALEXANDRIA, Va., July 16 -- United States Patent no. D1,084,405, issued on July 15, was assigned to Jiaxing Explorer Metal Products Co. Ltd. (Zhejiang, China).
"Retractable ladder" was invented by Tingli Cui (Zhejiang, China).
The patent was filed on Nov. 23, 2022, under Application No. D/860,880.
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