ALEXANDRIA, Va., June 2 -- United States Patent no. 12,643,439, issued on June 2, was assigned to Bambino Prezioso Switzerland AG (Steinhausen, Switzerland).

"Device for preventing mis-rotation and seat" was invented by Qinrui Wei (Dongguan, China) and Yingzhong Chen (Dongguan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for preventing mis-rotation including: a blocking portion; a mount having a bottom wall, a first side wall and a second side wall configured to form an accommodating space; a stopper pivotally arranged between the side walls and at least partially accommodated in the accommodating space to pivot between a locking position in which the stopper is clamped with and stopped at ...