ALEXANDRIA, Va., June 9 -- United States Patent no. D1,072,642, issued on April 29, was assigned to Zhejiang Juxin Technology Co. Ltd. (Jinhua, China).
"Stair tread template ruler" was invented by Hui Zhan (Zhejiang, China) and Xiongbin Jin (Jinhua, China).
The patent was filed on Feb. 10, 2025, under Application No. D/989,033.
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