ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,900, issued on Dec. 30, was assigned to XINGMAI INNOVATION TECHNOLOGY (SUZHOU) Co. LTD. (Suzhou, China).

"Cleaning device" was invented by Shengle Wang (Suzhou, China) and Shilei Zhang (Suzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a pool cleaning robot. The pool cleaning robot includes a body; a filtering box detachably mounted on the body; and an in-position detection mechanism for the filtering box, where the in-position detection mechanism for the filtering box is configured to detect whether the filtering box is mounted in position on the body. The in-position detection mechanism for the filtering ...