Propeller fan

FIG. 1 . is a front perspective view of the front, right, and bottom sides of a propeller fan showing an initial embodiment of our new design;

FIG. 2 . is a front view thereof;

FIG. 3 . is a rear view thereof;

FIG. 4 . is a left side view thereof;

FIG. 5 . is a right side view thereof;

FIG. 6 . is a top plan view thereof;

FIG. 7 . is a bottom view thereof; and,

FIG. 8 . is an enlarged view at a part 8 of FIG. 1 .

The broken lines shown represent unclaimed subject matter of the propeller fan and form no part of the claimed design. The dash-dot lines represent the boundary between the claimed design and unclaimed design.