ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,730, issued on May 27, was assigned to ECOPLASTIC Corp. (Gyeongju-si, South Korea).
"Wing knob device for air vent" was invented by Hae Ju Park (Gyeongju-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a wing knob device for an air vent, the wing knob device, which is installed in any one of a plurality of rear wings to change an angle of a rear wing and a front wing, the wing knob device including a rear knob provided to surround an exterior of the rear wing and comprising a wing inserting portion opened forward to move in a longitudinal direction of the rear wing, a front knob coupled to a front end portion of the rear k...