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The ornamental design for heater or cooling fan, as shown. |
FIG. 1 is a front perspective view of a heater or cooling fan showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is an enlarged top plan view thereof; and
FIG. 7 is an enlarged bottom plan view thereof.
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