ALEXANDRIA, Va., July 23 -- United States Patent no. 12,364,381, issued on July 22, was assigned to YUNJING INTELLIGENCE INNOVATION (SHENZHEN) Co. LTD (Shenzhen, China) and YUNUING INTELLIGENCE (SHENZHEN) Co. LTD (Shenzhen, China).

"Base station and water tank" was invented by Churui Xu (Shenzhen, China), Ming Duan (Shenzhen, China), Zhenkang Fang (Shenzhen, China), Yafei Ding (Shenzhen, China), Kunhuan She (Shenzhen, China) and Wanlong Qin (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A base station includes a base station body, a first water tank, and a second waterway system. The base station body is provided with a cleaning system. The first water tank is removably installed in the base...