USD452941SExpiredUtility

Safety helmet

70
Priority: Mar 9, 2001Filed: Mar 9, 2001Granted: Jan 8, 2002
Est. expiryMar 9, 2021(expired)· nominal 20-yr term from priority
Inventors:Chang-Hsien Ho
70
PatentIndex Score
16
Cited by
6
References
1
Claims

Claims

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

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