ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,612, issued on Jan. 13, was assigned to Mizuno Corp. (Osaka, Japan).
"Modular putter" was invented by David Llewellyn (Norcross, Ga.), John Freeman (Norcross, Ga.), Kazuhiro Doi (Osaka, Japan) and Reiya Nishio (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosed systems and methods relate to improved customizable golf club heads. The golf club head can include a first body, a second body, and a fastener. The first body can include a striking face, a first top surface, a first bottom surface, a first heel, a first toe, a first rear wall opposite the striking face, and a hosel. The first body can further define at least one apert...