Handheld folding fan

FIG. 1 is front view of a handheld folding fan;

FIG. 2 is a rear view thereof;

FIG. 3 is a left view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is front, right perspective view thereof;

FIG. 8 is rear, left perspective view thereof;

FIG. 9 is a rear, right view of FIG. 1 folded; and,

FIG. 10 is a front, left view of FIG. 1 folded.

The broken lines shown in the drawings depict portions of the handheld folding fan that form no part of the claimed design.