ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,933, issued on March 3.
"Wrench structure" was invented by Chia-Kuan Liao (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wrench structure includes a wrench body provided with a handle. The handle has a top and a bottom each provided with two first faces and two first recessed portions. The handle has a center provided with a projection having two second faces protruding from the first faces. The handle is provided with eight ribs. Each of the first recessed portions is defined between two of the ribs. The handle has two sides each provided with two first side faces. The projection has two second side faces protruding from the fir...