ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,490,813, issued on Dec. 9, was assigned to PERFITT INC. (Yuseong-gu, South Korea).
"Device for measuring inner size of shoe" was invented by Steena Sun Yong Lee (Seoul, South Korea) and Ye Ji Choi (Gwangju-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device for measuring an inner size of a shoe, the device includes: a driving unit inserted into the shoe; a length adjustment unit having a length capable of being adjusted by the driving unit and having a shape of a stick that is elongated in front and rear directions of the shoe; and a measuring unit capable of moving along the length adjustment unit in the front and rear directions of ...