ALEXANDRIA, Va., Dec. 9 -- United States Patent no. D1,104,789, issued on Dec. 9, was assigned to ABB SCHWEIZ AG (Baden, Switzerland).
"Ultrasonic level meter" was invented by Rendong Li (Shanghai), Renyi Qu (Shanghai), Gang Zhou (Shanghai), Xiaoxiang Zhou (Shanghai), Ying Liu (Shanghai), Tongyu Bi (Shanghai) and Xiangyu Yan (Shanghai).
The patent was filed on June 4, 2024, under Application No. D/945,561.
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