ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,249, issued on Sept. 23, was assigned to HENAN AGRICULTURAL UNIVERSITY (Zhengzhou, China).
"Fertilizer mixer" was invented by Tianbao Ren (Zhengzhou, China), Yuewei Wei (Zhengzhou, China), Andong Song (Zhengzhou, China), Maosen Li (Zhengzhou, China), Quanyu Yin (Zhengzhou, China), Xiaoming Ji (Zhengzhou, China) and Guoshun Liu (Zhengzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fertilizer mixer includes a housing, a plurality of supporting rods, a roof plate, a mixing room, a lifting mechanism, a stirring mechanism, a control mechanism, a driving mechanism, and a cleaning mechanism. The housing includes a top end and one end of each ...