Portable air filtration device

FIG. 1 is a front perspective view of a portable air filtration device.

FIG. 2 is a front view of the portable air filtration device of FIG. 1.

FIG. 3 is a rear view of the portable air filtration device of FIG. 1.

FIG. 4 is a top view of the portable air filtration device of FIG. 1.

FIG. 5 is a right side view of the portable air filtration device of FIG. 1; and,

FIG. 6 is a left side view of the portable air filtration device of FIG. 1.

The broken lines illustrate environment and/or boundaries of the claimed design, and form no part of the claimed design.

The ornamental design for a portable air filtration device, as shown and described.

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D374480	Micoley	Oct 1996	S
D376419	Seaman et al.	Dec 1996	S
D394099	Tsuji	May 1998	S
D395492	Phillips et al.	Jun 1998	S
D418591	Birdsell et al.	Jan 2000	S
D449676	Mulvaney et al.	Oct 2001	S
D459456	Campbell	Jun 2002	S
D500847	Manke et al.	Jan 2005	S
D532879	Ching	Nov 2006	S
D548314	Huang	Aug 2007	S
D572355	Gao	Jul 2008	S
D582531	Israel et al.	Dec 2008	S
D591412	Rittri et al.	Apr 2009	S
D594102	Israel et al.	Jun 2009	S
D597186	Campbell et al.	Jul 2009	S
D597187	Campbell	Jul 2009	S
D597640	Israel et al.	Aug 2009	S
D611134	Borgi	Mar 2010	S
D626641	Ediger et al.	Nov 2010	S
D654578	Ediger et al.	Feb 2012	S

Entry
The Predator® 600 Portable Air Scrubber, available to Applicants at least as early as Oct. 24, 2013.
Dri-Eaz® Owner's Manual DefendAir® Hepa 500 Air Scubber 115v Model, available to Applicants at least as early as Oct. 24, 2013.
Dri-Eaz® Air Filtration Hepa 500, available to Applicants at least as early as Oct. 24, 2013.