ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,015, issued on April 14.
"Box-end tool structure" was invented by Chien-Ying Lee (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A box-end tool structure includes a first body, a second body, two third body modules, and a fourth body. The first body is provided with a first end, a second end, two first receiving grooves, a first face, two second faces, and a first slot. The second body is mounted on the first body and provided with a first mounting portion and two third faces. The two third body modules are moved in the first slot linearly and simultaneously to be close to or away from the second body. One of the third body modules...