USD887553SActiveUtility

Respirator filter

55
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Apr 4, 2018Filed: Apr 4, 2018Granted: Jun 16, 2020
Est. expiryApr 4, 2038(~11.7 yrs left)· nominal 20-yr term from priority
Inventors:John S. HubertyJennifer A. ChaissonGary E. DwyerDenise L. Goddard
55
PatentIndex Score
7
Cited by
32
References
1
Claims

Claims

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

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