ALEXANDRIA, Va., June 10 -- United States Patent no. D1,073,814, issued on May 6, was assigned to Shenzhen Shi Hu Lian Heng Tong Trading Co. Ltd. (Shenzhen, China).
"Puzzle board" was invented by Xiaoling Che (Dangyang, China) and Jinyan Duan (Shenzhen, China).
The patent was filed on Sept. 13, 2024, under Application No. D/962,755.
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