The ornamental design for a punchretainer, as shown and described.
FIG. 1 is a perspective view of the design for a punch retainer according to the present invention;
FIG. 2 is another perspective view of the punch retainer shown in FIG. 1;
FIG. 3 is a top plan view of the punch retainer shown in FIG. 1;
FIG. 4 is a bottom plan view of the punch retainer shown in FIG. 1;
FIG. 5 is a cross-sectional view taken along line 5—5 of FIG. 3; and,
FIG. 6 is a cross-sectional view taken along line 6—6 of FIG. 3.
The broken lines showing the beveled edges, vent passage, threads, and other features are for illustrative purposes only and form no part of the claimed design.