Claims (1)
Claim 1 (Independent)
The ornamental design for a protective helmet as shown and described.
Full Description
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1. Protective helmet
1 . 1 : Perspective
1 . 2 : Front
1 . 3 : Right
1 . 4 : Back
1 . 5 : Left
1 . 6 : Top
1 . 7 : Bottom
1 . 8 : perspective view rear
Citations
This patent cites (11)
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