USD575390SExpiredUtility

Exhalation valve filter

60
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Jun 30, 2005Filed: Jun 30, 2005Granted: Aug 19, 2008
Est. expiryJun 30, 2025(expired)· nominal 20-yr term from priority
Inventors:Chris W. ScottDerek A. ParkinAbigail L. CurtisLawrie D. Coote
60
PatentIndex Score
16
Cited by
11
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for an exhalation valve filter, as shown and described.

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