The ornamental design for a backhoe, as shown and described.
FIG. 1 is a right rear perspective view of the backhoe showing our new design. The part of the photograph shown in coarse dot pattern and outlined in dashed lines illustrates a portion of the backhoe that forms no part of the claimed design;
FIG. 2 is a left rear perspective view thereof. The part of the photograph shown in coarse dot pattern and outlined in dashed lines illustrates a portion of the backhoe that forms no part of the claimed design;
FIG. 3 is a front view thereof. The part of the photograph shown in coarse dot pattern and outlined in dashed lines illustrates a portion of the backhoe that forms no part of the claimed design;
FIG. 4 is a top plan view thereof. The part of the photograph shown in coarse dot pattern and outlined in dashed lines illustrates a portion of the backhoe that forms no part of the claimed design;