| US D591,371 S | ||
| Putter head | ||
| Thomas R. Hilton, Cardiff, Calif. (US) | ||
| Assigned to Callaway Golf Company, Carlsbad, Calif. (US) | ||
| Filed on Oct. 19, 2007, as Appl. No. 29/296,421. | ||
| Term of patent 14 Years | ||
| LOC (9) Cl. 21 - 02 | ||
| U.S. Cl. D21—736 |
| The ornamental design for a putter head, as shown and described. |