The ornamental design for a blenderattachment, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provide by the Office upon request and payment of the necessary fee.
FIG. 1 is a top perspective view of a blender attachment according to the present invention;
FIG. 2 is a first side view thereof;
FIG. 3 is a second side view thereof, opposite the first side view;
FIG. 4 is a third side view thereof;
FIG. 5 is a fourth side view thereof, opposite the third side view;