USD586051SActiveUtility

Protective helmet

71
Assignee: OPTICAL ENGINEERING COMPANY INPriority: May 15, 2008Filed: May 15, 2008Granted: Feb 3, 2009
Est. expiryMay 15, 2028(~1.8 yrs left)· nominal 20-yr term from priority
Inventors:Edward L. MartinJames Watkins
71
PatentIndex Score
21
Cited by
21
References
1
Claims

Claims

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

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