USD461004SExpiredUtility

Air filter device

72
Assignee: AIR QUALITY TECHNOLOGIES INCPriority: Nov 23, 2001Filed: Nov 23, 2001Granted: Jul 30, 2002
Est. expiryNov 23, 2021(expired)· nominal 20-yr term from priority
Inventors:Bruce R. Searle
72
PatentIndex Score
22
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
I claim the ornamental design for an air filter device, as shown.

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