Patent
   D657449
Priority
Sep 20 2007
Filed
Sep 20 2007
Issued
Apr 10 2012
Expiry
Apr 10 2026
Assg.orig
Entity
unknown
1
48
n/a
The ornamental design for a filtering face-piece respirator support structure, as shown and described.

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.

Domroese, Michael K., Skulley, Thomas G., Johnson, Erik J.

Patent Priority Assignee Title
10137321, Oct 28 2015 3M Innovative Properties Company Filtering face-piece respirator having an integrally-joined exhalation valve
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Sep 20 20073M Innovative Properties Company(assignment on the face of the patent)
Nov 14 2007JOHNSON, ERIK3M Innovative Properties CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0201890830 pdf
Nov 14 2007DOMROESE, MICHAEL K 3M Innovative Properties CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0201890830 pdf
Nov 30 2007SKULLEY, THOMAS G 3M Innovative Properties CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0201890830 pdf
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