ALEXANDRIA, Va., March 31 -- United States Patent no. D1,120,924, issued on March 31, was assigned to Beijing Zitiao Network Technology Co. Ltd. (Beijing).
"Attendance machine" was invented by Chuncheng Kuo (Beijing), Guangyuan Zhang (Beijing), Dian Sheng (Beijing) and Xindu Ma (Beijing).
The patent was filed on Aug. 25, 2023, under Application No. D/900,903.
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