The ornamental design for a blenderjar, as shown and described.
FIG. 1 is a perspective view of a blender jar showing our new invention;
FIG. 2 is a top view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a left side view thereof; and,
FIG. 6 is a bottom view thereof.
The stippling shown in FIGS. 1–4 and 6 is provided to illustrate the contrast between a portion of the surface of the handle and the adjacent surfaces, and does not represent any particular surface treatment.