Filter cover for powered air purifying respirator
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Description
The broken lines enclosing portions of the article are included for the purpose of illustrating structure that is not part of the claimed design.
The shading is provided to illustrate contour only and is not an indication of surface texture.
Claims
The ornamental design for a filter cover for powered air purifying respirator, as shown and described.
Patent History
Patent number: D681190
Type: Grant
Filed: Feb 15, 2012
Date of Patent: Apr 30, 2013
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Gary E. Dwyer (Mallorytown), Nathan A. Abel (Minneapolis, MN), James E. Steffen (Woodbury, MN), John M. Pilgrim (Woodbury, MN)
Primary Examiner: Ian Simmons
Assistant Examiner: Richelle Shelton
Application Number: 29/413,401
Type: Grant
Filed: Feb 15, 2012
Date of Patent: Apr 30, 2013
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Gary E. Dwyer (Mallorytown), Nathan A. Abel (Minneapolis, MN), James E. Steffen (Woodbury, MN), John M. Pilgrim (Woodbury, MN)
Primary Examiner: Ian Simmons
Assistant Examiner: Richelle Shelton
Application Number: 29/413,401
Classifications
Current U.S. Class:
Respirator, Vaporizer, Or Inhalation Tube (4) (D24/110)