USD465196SExpiredUtility
Four propeller helicopter
Priority: Dec 14, 2001Filed: Dec 14, 2001Granted: Nov 5, 2002
Est. expiryDec 14, 2021(expired)· nominal 20-yr term from priority
Inventors:Michael A. Dammar
91
PatentIndex Score
97
Cited by
22
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a four propeller helicopter, as shown and described.
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