ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,149, issued on Feb. 24, was assigned to ShelterLogic Corp. (Watertown, Conn.).
"Foldable cart and foldable cart frame" was invented by Ning Xue (Newtown, Conn.) and Jeffrey Clayton Simonson (Austin, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A foldable cart frame including a first rod having a first end and a second end; a second rod having a first end and a second end; a third rod having a first end and a second end, wherein the first end of the third rod is rotatably coupled to the first end of the second rod; a fourth rod having a first end and a second end, wherein the first end of the fourth rod is rotatably coupled to the second end ...