Patent 7452283 was granted and assigned to Callaway Golf Company on November, 2008 by the United States Patent and Trademark Office.
A putter-head (20) with a main body (22) having a striking face (24), a weight body (25) and an isolation layer 27 is disclosed herein. The striking face (24) has a dual milled pattern thereon. Preferably, a central area (40) has a first milled pattern and a periphery region (42) has a second milled pattern. The main body (22) is composed of a metal material, preferably a stainless steel material.