Exhalation valve filter

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Description

FIG. 1 is a perspective view, showing the new design for an exhalation valve filter.

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof, the left side view being a mirror image thereof; and,

FIG. 6 is a rear view thereof.

The broken line showing in FIGS. 1-6 forms no part of the claimed design. The shading that is shown in the Figures, including the criss-cross pattern, is provided only to illustrate contour and is not indicative of any particular texture, etc.

Claims

The ornamental design for an exhalation valve filter, as shown and described.

Referenced Cited
U.S. Patent Documents
4827924 May 9, 1989 Japuntich
D347298 May 24, 1994 Japuntich et al.
D389239 January 13, 1998 Scholey
D413166 August 24, 1999 Snow et al.
D431647 October 3, 2000 Henderson et al.
6460539 October 8, 2002 Japuntich et al.
6584976 July 1, 2003 Japuntich et al.
6718982 April 13, 2004 Smith et al.
6854463 February 15, 2005 Japuntich et al.
7007695 March 7, 2006 Curran et al.
20030005934 January 9, 2003 Japuntich et al.
20040040562 March 4, 2004 Brunell
Patent History
Patent number: D546942
Type: Grant
Filed: Apr 1, 2004
Date of Patent: Jul 17, 2007
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventor: Andrew M. Taylor (Darlington)
Primary Examiner: Ian Simmons
Assistant Examiner: Christopher Lee
Attorney: Karl G Hanson
Application Number: 29/202,572
Classifications
Current U.S. Class: Regulator Or Valve (D24/110.6)