ALEXANDRIA, Va., June 6 -- United States Patent no. D1,072,278, issued on April 22, was assigned to Zhongshan Yizhong Printing Co. Ltd. (Zhongshan, China).
"Safety gate" was invented by Guozhu Feng (Guangdong, China), Jianghua He (Guangdong, China) and Xinliang Ouyang (Jiangxi, China).
The patent was filed on Sept. 29, 2023, under Application No. D/913,380.
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