USD529606SExpiredUtility

Air duct

40
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Apr 7, 2004Filed: Apr 7, 2004Granted: Oct 3, 2006
Est. expiryApr 7, 2024(expired)· nominal 20-yr term from priority
Inventors:Paul HindDesmond T. CurranPeter Lee
40
PatentIndex Score
5
Cited by
20
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for an air duct, as shown and described.

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