USD447287SExpiredUtility

Safety helmet

70
Priority: Sep 15, 2000Filed: Sep 15, 2000Granted: Aug 28, 2001
Est. expirySep 15, 2020(expired)· nominal 20-yr term from priority
Inventors:Chang-Hsien Ho
70
PatentIndex Score
16
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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