Respirator filter cover
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Description
The broken lines in the drawings illustrate portions of the respirator filter cover which form no part of the claimed design.
Claims
The ornamental design for a respirator filter cover, as shown and described.
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Patent History
Patent number: D746438
Type: Grant
Filed: May 22, 2014
Date of Patent: Dec 29, 2015
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventor: Gary E. Dwyer (Mallorytown)
Primary Examiner: Deanna L Pratt
Assistant Examiner: Lilyana Bekic
Application Number: 29/491,575
Type: Grant
Filed: May 22, 2014
Date of Patent: Dec 29, 2015
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventor: Gary E. Dwyer (Mallorytown)
Primary Examiner: Deanna L Pratt
Assistant Examiner: Lilyana Bekic
Application Number: 29/491,575
Classifications
Current U.S. Class:
Mask (D24/110.1)