USD531762SExpiredUtility

Protective helmet

57
Assignee: MED ENG SYSTEMS INCPriority: Mar 1, 2004Filed: Sep 1, 2004Granted: Nov 7, 2006
Est. expiryMar 1, 2024(expired)· nominal 20-yr term from priority
Inventors:Robert BelandMark H. SmithStephen CamrassBrent Almstedt
57
PatentIndex Score
11
Cited by
12
References
1
Claims

Claims

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

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