USD443394SExpiredUtility

Safety helmet

67
Assignee: OPTICAL ENGINEERING COMPANY LLPriority: Feb 17, 2000Filed: Feb 17, 2000Granted: Jun 5, 2001
Est. expiryFeb 17, 2020(expired)· nominal 20-yr term from priority
Inventors:Edward L. MartinFrederick P. Edgar
67
PatentIndex Score
17
Cited by
7
References
1
Claims

Claims

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

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