ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,129, issued on April 15.
"Toolbox group connecting structure" was invented by Jinhui Zhang (Zhangjiagang, China) and Li Huang (Zhangjiagang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toolbox group connecting structure includes a connecting device and a snap-fitting device. The connecting device and the snap-fitting device are respectively installed on two adjacent toolboxes, and the two adjacent toolboxes are inserted to mate through the connecting device and the snap-fitting device, a plurality of toolboxes together form a trolley tool cart. By combining the plurality of toolboxes into the trolley tool cart that can be easily moved, the...