The ornamental design for a golfputterhead, as shown and described.
FIG. 1 is a perspective view of the ball striking face of golf putter head showing my new design including a shaft partly broken away, the shaft not forming a part of the design;
FIG. 2 is a perspective of the side opposite the ball striking face of the golf putter head shown in FIG. 1;
FIG. 3 is a top plan view of the golf putter head shown in FIG. 1;
FIG. 4 is a view in perspective showing the top and player facing side wall of the golf putter head shown in FIG. 1 with the shaft of the club removed;
FIG. 5 is a view in perspective showing the top and opposite side wall of the view shown in FIG. 4 with the shaft of the club removed; and,
FIG. 6 is bottom plan view in perspective of the bottom side wall of the golf putter head shown in FIG. 1.
The broken lines shown are included for the purpose of illustrating unclaimed subject matter and forms no part of the claimed design.