USD674151SActiveUtility

Protective helmet

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Assignee: 3M INNOVATIVE PROPERTIES COPriority: Sep 13, 2011Filed: Mar 12, 2012Granted: Jan 8, 2013
Est. expirySep 13, 2031(~5.2 yrs left)· nominal 20-yr term from priority
Inventors:Björn DanielsOskar JuhlinMartin BirathHenrik OlssonKristian Eke
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PatentIndex Score
2
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10
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a protective helmet, as shown and described.

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