USD426677SExpiredUtility

Safety helmet

88
Assignee: HO CHANG-HSIENPriority: Apr 21, 1999Filed: Apr 21, 1999Granted: Jun 13, 2000
Est. expiryApr 21, 2019(expired)· nominal 20-yr term from priority
Inventors:Chang-Hsien Ho
88
PatentIndex Score
31
Cited by
11
References
1
Claims

Claims

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

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