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The ornamental design for a protective helmet, as shown and described.
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FIG. 1 is a left side view of a protective helmet showing my new design;
FIG. 2 is a right side view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a perspective view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jun 16 2017 | PIERCE, ROBERT A | IMPACT RACING, INC | NUNC PRO TUNC ASSIGNMENT SEE DOCUMENT FOR DETAILS | 045248 | /0260 |
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