USD255394SExpiredUtility

Ribbed helmet

82
Assignee: BELL HELMETS INCPriority: Apr 11, 1978Filed: Apr 11, 1978Granted: Jun 17, 1980
Est. expiryApr 11, 1998(expired)· nominal 20-yr term from priority
Inventors:Otho F. Mcnabb
82
PatentIndex Score
20
Cited by
1
References
1
Claims

Claims

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

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