USD446630SExpiredUtility
Inflatable helmet
Est. expiryOct 10, 2020(expired)· nominal 20-yr term from priority
Inventors:Marvin S. Lieberman
68
PatentIndex Score
16
Cited by
8
References
1
Claims
Claims
exact text as granted — not AI-modifiedI claim the ornamental design for an inflatable helmet, as shown and described.
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