ALEXANDRIA, Va., July 9 -- United States Patent no. 12,350,955, issued on July 8, was assigned to Zhejiang Juxin Technology Co. Ltd. (Jinhua, China).
"Stair tread template ruler" was invented by Xiongbin Jin (Jinhua, China) and Hui Zhan (Jinhua, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a stair tread template ruler, including a main ruler body, and two side ruler bodies. Either of the side ruler bodies is provided with a sliding member that can slide in a reciprocating manner, and the main ruler body is hingedly connected to the sliding members. The two side ruler bodies are arranged at both ends of the main ruler body, and the main ruler body and the two side ruler bodies cooperate t...