ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,292, issued on June 30, was assigned to WONDERLAND SWITZERLAND AG (Steinhausen, Switzerland).
"Vehicle frame and stroller" was invented by Mingxing Sun (Steinhausen, Switzerland) and Shoufeng Hu (Steinhausen, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A stroller includes a texture carrier, a wheel set and a vehicle frame. The wheel set includes a front wheel and a rear wheel. The vehicle frame includes a first tube, a second tube, a third tube, a fourth tube and a first pivot unit. The front wheel is disposed on the first tube. The rear wheel is disposed on the second tube. The third tube includes a front section and a rear section c...