We claim the ornamental design for a vending machine, as shown and described.
The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front view of the first embodiment of a vending machine showing our new design;
FIG. 2 is a left side perspective view thereof;
FIG. 3 is a right side perspective view thereof;
FIG. 4 is a front view of the second embodiment of a vending machine shown in color;
FIG. 5 is a left side perspective view thereof; and,
FIG. 6 is a right side perspective view thereof.
The broken lines and the areas within the white overlay show portions of the vending machine that form no part of the claimed design.