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The ornamental design for a safety helmet, as shown and described.
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The evenly broken lines depict portions of the safety helmet that form no part of the claimed design. The dash-dot broken lines in
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Dec 03 2018 | PETZL, PAUL | Zedel | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 047679 | /0589 | |
Dec 05 2018 | Zedel | (assignment on the face of the patent) | / |
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