ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,620, issued on Sept. 9, was assigned to TK MOLD & ENGINEERING INC. (Bruce Township, Mich.).
"Die assembly and method of forming a vinyl record" was invented by Thomas William Barr (Shelby Township, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A die assembly and a method of forming a vinyl record are provided. The assembly includes a base circular-shaped plate having an outer ring-shaped gasket groove, an inner O-ring groove, and a plurality of concentric grooves extending from a primary surface into the base circular-shaped plate. The assembly includes an O-ring that is disposed in the inner O-ring groove, and an outer ring-shaped gasket di...