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The ornamental design for a multi-function helmet, as shown and described. |
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FIG. 1 is a front perspective view of a multi-function helmet showing my new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a right side elevational view thereof, the left side being a mirror image.
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