FIG. 1 is a first perspective view of a first embodiment of a foldable fan showing my new design;
FIG. 2 is a second perspective view of the first embodiment thereof;
FIG. 3 is a front view of the first embodiment thereof;
FIG. 4 is a back view of the first embodiment thereof;
FIG. 5 is a left side view of the first embodiment thereof;
FIG. 6 is a right side view of the first embodiment thereof;
FIG. 7 is a top view of the first embodiment thereof;
FIG. 8 is a bottom view of the first embodiment thereof;
FIG. 9 is a perspective view of another state of the first embodiment of the foldable fan thereof;
FIG. 10 is a perspective view of further another state of the first embodiment of the foldable fan thereof;
FIG. 11 is a first perspective view of a second embodiment of the foldable fan showing my new design;
FIG. 12 is a second perspective view of the second embodiment thereof;
FIG. 13 is a front view of the second embodiment thereof;
FIG. 14 is a back view of the second embodiment thereof;
FIG. 15 is a left side view of the second embodiment thereof;
FIG. 16 is a right side view of the second embodiment thereof;
FIG. 17 is a top view of the second embodiment thereof;
FIG. 18 is a bottom view of the second embodiment thereof;
FIG. 19 is a perspective view of another state of the second embodiment of the foldable fan thereof; and,
FIG. 20 is a perspective view of further another state of the second embodiment of the foldable fan thereof.
The broken lines shown in the drawings depict portions of the foldable fan in which the design is embodied that form no part of the claimed design.