US D421786 S
Abstract available in
FIG. 1 is a front elevational view of an area filter device showing my new design;
FIG. 2 is a top view of the area filter device; and,
FIG. 3 is a top view of the area filter device shown with a replaceable filter device removed for clarity of illustration.
The surface(s) or portion(s) of the article not shown in the drawing or described in the specification form(s) no part of the claimed design.