ALEXANDRIA, Va., March 19 -- United States Patent no. 12,250,997, issued on March 18.
"String adjustment device" was invented by Sug Whan Kim (Gimpo-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a string adjuster that can adjust the length of a string by winding the string. A string adjuster of the present invention includes a fixed unit and a rotation unit, in which a knob of the rotation unit includes a first extension having a counter-anti-separator formed on the interior circumferential surface and preventing separation from a housing, a second extension having a winding determination protrusion formed on the interior circumferential surface and determinin...