FIG. 1 is a perspective view of a utility knife showing our new design;
FIG. 2 is a right side view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a front view thereof; and,
FIG. 7 is a back view thereof.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.