ALEXANDRIA, Va., Dec. 9 -- United States Patent no. RE50,688, issued on Dec. 9, was assigned to SUZHOU XINDADI HARDWARE Co. LTD. (Suzhou, China).
"Multifunctional folding trolley" was invented by Zhixiang Cao (Suzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a multifunctional folding trolley, which comprises four pillars, a first tray at the upper end of the four pillars, a second tray at the middle of the four pillars, and a third tray at the lower end of the four pillars, the third tray being provided at the bottom with roller feet; the four pillars, arranged in a cubic shape with side openings, comprise a first pillar group and a second pillar group arranged fro...