USD453590SExpiredUtility

Safety helmet

73
Priority: May 4, 2001Filed: May 4, 2001Granted: Feb 12, 2002
Est. expiryMay 4, 2021(expired)· nominal 20-yr term from priority
Inventors:Chang-Hsien Ho
73
PatentIndex Score
18
Cited by
8
References
1
Claims

Claims

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

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