Folding Knife

FIG. 1 is a front perspective view of a folding knife; FIG. 2 is a back perspective thereof; FIG. 3 is a front view thereof; FIG. 4 is a back view thereof; FIG. 5 is an end view thereof; FIG. 6 is an end view thereof; FIG. 7 is a top view thereof; and, FIG. 8 is a bottom view thereof. The dash-dash broken lines illustrate portions of the article that form no part of the claimed design.