ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,594, issued on Dec. 9.
"Mortise and tenon alignment jig" was invented by Eric Soring (Glen Mills, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A mortise and tenon alignment jig includes a generally oblong body having a first straight longitudinal side, an opposing, second straight longitudinal side, a first semi-circular end portion connecting first ends of each of the first and second sides, and a second semi-circular end portion connecting second ends of each of the first and second sides. A top face has a lip extending outwardly of the body. A raised imprint surface is formed on a top of the top face. The imprint surface has a central gap an...