Filtering face-piece respirator support structure

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Description

FIG. 1 is a perspective view, showing the new design for a filtering face-piece respirator support structure;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view, the right side view being a mirror image thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing forms no part of the claimed design.

Claims

The ornamental design for a filtering face-piece respirator support structure, as shown and described.

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Patent History
Patent number: D657449
Type: Grant
Filed: Sep 20, 2007
Date of Patent: Apr 10, 2012
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Erik J. Johnson (St. Paul, MN), Thomas G. Skulley (St. Paul, MN), Michael K. Domroese (Woodbury, MN)
Primary Examiner: Ian Simmons
Assistant Examiner: Charles Hanson
Attorney: Karl G. Hanson
Application Number: 29/295,021
Classifications
Current U.S. Class: Mask (D24/110.1)