ALEXANDRIA, Va., Nov. 25 -- United States Patent no. D1,103,129, issued on Nov. 25, was assigned to Otis Elevator Co. (Farmington, Conn.).
"Elevator button" was invented by Zhe Li (Shanghai) and Sisi Zheng (Shanghai).
The patent was filed on Sept. 22, 2022, under Application No. D/854,174.
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