Exhalation valve filter
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Description
The broken line showing forms no part of the claimed design, and the shading is provided to illustrate contour only and is not an indication of texture, gloss, etc.
Claims
The ornamental design for an exhalation valve filter, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
D347298 | May 24, 1994 | Japuntich et al. |
5829433 | November 3, 1998 | Shigematsu et al. |
D413166 | August 24, 1999 | Snow et al. |
6047698 | April 11, 2000 | Magidson et al. |
D431647 | October 3, 2000 | Henderson et al. |
D449377 | October 16, 2001 | Henderson et al. |
D458364 | June 4, 2002 | Curran et al. |
RE37974 | February 4, 2003 | Bowers |
6584976 | July 1, 2003 | Japuntich et al. |
6805124 | October 19, 2004 | Japuntich et al. |
- U.S. Appl. No. 29/233,288 to Parkin et al., filed Jun. 30, 2005 entitled Frame That Supports An Exhalation Valve Filter.
Patent History
Patent number: D575390
Type: Grant
Filed: Jun 30, 2005
Date of Patent: Aug 19, 2008
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Chris W. Scott (County Durham), Derek A. Parkin (County Durham), Abigail L. Curtis (Hartlepool), Lawrie D. Coote (Berkshire)
Primary Examiner: Ian Simmons
Assistant Examiner: Christopher Lee
Attorney: Karl G. Hanson
Application Number: 29/233,287
Type: Grant
Filed: Jun 30, 2005
Date of Patent: Aug 19, 2008
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Chris W. Scott (County Durham), Derek A. Parkin (County Durham), Abigail L. Curtis (Hartlepool), Lawrie D. Coote (Berkshire)
Primary Examiner: Ian Simmons
Assistant Examiner: Christopher Lee
Attorney: Karl G. Hanson
Application Number: 29/233,287
Classifications
Current U.S. Class:
Regulator Or Valve (D24/110.6);
Mask (D24/110.1);
Regulator Or Valve (D24/110.6)