ALEXANDRIA, Va., June 18 -- United States Patent no. 12,324,371, issued on June 10, was assigned to Hainan University (Haikou, China).

"Navigation method and system for caterpillar-type agricultural machinery during loss of navigation real-time kinematic signal" was invented by Jian Zhang (Hainan, China), Yang Liu (Hainan, China), Ranbing Yang (Hainan, China), Huihui Wen (Hainan, China), Yongfei Pan (Hainan, China), Shiting Lv (Hainan, China), Ang Zhao (Hainan, China), Xinyu Guo (Hainan, China), Hongfei Zhu (Hainan, China), Zhuhe Shao (Hainan, China) and Yao Li (Hainan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a navigation method and system for caterpillar-type agr...