We claim the ornamental design for an agricultural baler, as shown and described.
FIG. 1 is a front perspective view of an agricultural baler showing our new design;
FIG. 2 is a side view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a rear view thereof;
FIG. 7 front perspective view of an agricultural baler showing our new design as used on a baler having a rear shield;
FIG. 8 is a side view thereof;
FIG. 9 is a top view thereof;
FIG. 10 is a bottom view thereof;
FIG. 11 is a front view thereof; and,
FIG. 12 is a rear view thereof.
Only one side view is provided as the left side view is a mirror image of the right side view. Only the shapes and portions bounded by solid lines form the claimed design. The elements depicted in dashed lines are shown for illustrative purpose of environment and form no part of the ornamental design.