USD493874SExpiredUtility

Air filtration system

93
Assignee: AMERICAIR CORPPriority: Jun 18, 2003Filed: Jun 18, 2003Granted: Aug 3, 2004
Est. expiryJun 18, 2023(expired)· nominal 20-yr term from priority
Inventors:Jim Woods
93
PatentIndex Score
62
Cited by
5
References
1
Claims

Claims

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

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