ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,614, issued on Dec. 9, was assigned to SAME YONG INDUSTRIAL Co. LTD (Taichung, Taiwan) and EVERPRO INTERNATIONAL CORP (Taichung, Taiwan).

"Stapler with improved driving structure" was invented by Fu-Cheng Tsai (Taichung, Taiwan) and Kun-Hon Chen (Taichung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A stapler includes a body, first and second shafts connected to the body, a staple driver having a hooked hole, an elastic unit elastically driving the staple driver, an operation lever inserted by the first shaft, a third shaft making the operation lever pivotably connected with a pivotably connecting member, a hook member having a second hole ...