Respirator support structure
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Description
The broken line showing is included for the purpose of illustrating environmental structure and forms no part of the claimed design.
Claims
The ornamental design for a respirator support structure, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
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D421801 | March 21, 2000 | Brostrom et al. |
D440301 | April 10, 2001 | Fecteau |
6338342 | January 15, 2002 | Fecteau |
D471627 | March 11, 2003 | Mittelstadt |
6536435 | March 25, 2003 | Fecteau |
D473937 | April 29, 2003 | Fecteau |
D518571 | April 4, 2006 | Martin |
D568986 | May 13, 2008 | Holmquist-Brown |
D569969 | May 27, 2008 | Lin |
D570474 | June 3, 2008 | Lin |
D582546 | December 9, 2008 | Fujiura |
D629885 | December 28, 2010 | Skulley et al. |
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Patent History
Patent number: D690415
Type: Grant
Filed: Jul 2, 2012
Date of Patent: Sep 24, 2013
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: William A. Mittelstadt (Woodbury, MN), Nathan A. Abel (Minneapolis, MN)
Primary Examiner: Ian Simmons
Assistant Examiner: Richelle Shelton
Application Number: 29/426,194
Type: Grant
Filed: Jul 2, 2012
Date of Patent: Sep 24, 2013
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: William A. Mittelstadt (Woodbury, MN), Nathan A. Abel (Minneapolis, MN)
Primary Examiner: Ian Simmons
Assistant Examiner: Richelle Shelton
Application Number: 29/426,194
Classifications
Current U.S. Class:
Mask (D24/110.1)