Knife sharpener

Description

FIG. 1 is a front perspective view of a knife sharpener, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is an enlarged left side view thereof;

FIG. 5 is an enlarged right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view.

The broken lines in the drawings illustrate the portions of the knife sharpener, which form no part of the claimed design.

Claims

The ornamental design for a knife sharpener, as shown and described.