ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,376, issued on April 21, was assigned to SHANGHAI QUICKTRON INTELLIGENT TECHNOLOGY Co. LTD. (Shanghai).

"Shelf device, robot and warehousing system" was invented by Yundi He (Shanghai), Xinhao Wang (Shanghai) and Dan Tang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a shelf device, a robot and a warehousing system. The shelf device comprises: at least two shelves spaced apart, a channel being defined between two adjacent shelves; a track assembly located above the channel and detachably connected to tops of the two adjacent shelves. The track assembly is provided with a track extending in a passing direction of the channel...