USD492400SExpiredUtility

Air filtration device

72
Assignee: HAMILTON BEACH PROCTOR SILEXPriority: Jun 27, 2003Filed: Jun 27, 2003Granted: Jun 29, 2004
Est. expiryJun 27, 2023(expired)· nominal 20-yr term from priority
Inventors:Michael Ellis SmithPatrick T. Mulvaney
72
PatentIndex Score
17
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22
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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