USD484228SExpiredUtility

Air cleaner

55
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Nov 20, 2002Filed: Nov 20, 2002Granted: Dec 23, 2003
Est. expiryNov 20, 2022(expired)· nominal 20-yr term from priority
Inventors:Zhiqun ZhangRobert M. Swinehart
55
PatentIndex Score
9
Cited by
15
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a air cleaner, as shown and described.

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