The ornamental design for a wirestripper/utility knife, as shown and described.
FIG. 1 is a top left perspective view of the wire stripper/utility knife according to the present invention;
FIG. 2 is a bottom right perspective view of the wire stripper/utility knife of FIG. 1;
FIG. 3 is a left side elevational view of the wire stripper/utility knife of FIG. 1;
FIG. 4 is a right side elevational view of the wire stripper/utility knife of FIG. 1;
FIG. 5 is a top right perspective view of the wire stripper/utility knife of FIG. 1, with the wire stripper/utility knife in an open configuration; and,
FIG. 6 is a left side elevational view of the wire stripper/utility knife of FIG. 5.
The broken lines shown in the drawings represent unclaimed portions of the wire stripper/utility knife and form no part of the claimed design.