ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,208,831, issued on Jan. 28, was assigned to WONDERLAND SWITZERLAND AG (Steinhausen, Switzerland).
"Stroller frame" was invented by Zhiren Zhong (Dongguan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application discloses a stroller frame switchable between an unfolded position and a folded position. The stroller frame includes an unfolding and folding mechanism, a front foot support, a rear foot support, a first connecting bar, and a second connecting bar. The unfolding and folding mechanism includes a supporting body and a movable body movable relative to the supporting body. The front foot support is pivotally connected to the sup...