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The ornamental design for a safety helmet, as shown and described. |
FIG. 1 is a perspective view of a safety helmet showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a bottom plan view thereof; and
FIG. 7 is a cross-sectional view taken along line VII--VII of FIG. 6.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Nov 18 1981 | HIGGINSON, JOHN B | Protector Safety Industries Limited | ASSIGNMENT OF ASSIGNORS INTEREST | 003969 | /0298 | |
Dec 17 1981 | Protector Safety Industries Limited | (assignment on the face of the patent) | / |
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