USD506816SExpiredUtility

Air filtration device

70
Assignee: HAMILTON BEACH PROCTOR SILEXPriority: Apr 13, 2004Filed: Apr 13, 2004Granted: Jun 28, 2005
Est. expiryApr 13, 2024(expired)· nominal 20-yr term from priority
Inventors:Michael GarmanPatrick T. Mulvaney
70
PatentIndex Score
16
Cited by
21
References
1
Claims

Claims

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

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