USD480476SExpiredUtility

Filter cartridge for an escape hood

87
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Jun 4, 2002Filed: Jun 4, 2002Granted: Oct 7, 2003
Est. expiryJun 4, 2022(expired)· nominal 20-yr term from priority
Inventors:Paul A. MartinsonJames R. BetzSusan G. Danisch
87
PatentIndex Score
37
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a filter cartridge for an escape hood, as shown and described.

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