The ornamental design for apparatus for cleaning air filters, as shown and described.
FIG. 1 is a perspective view of a partial enlarged view of the apparatus of FIG. 8.
FIG. 2 is a front elevation view of a partial enlarged view of the apparatus of FIG. 8.
FIG. 3 is a rear elevation view of a partial enlarged view of the apparatus of FIG. 8.
FIG. 4 is a right side elevation view of a partial enlarged view of the apparatus of FIG. 8.
FIG. 5 is a left side elevation view of a partial enlarged view of the apparatus of FIG. 8.
FIG. 6 is top planar view of a partial enlarged view of the apparatus of FIG. 8.
FIG. 7 is a bottom planar view of a partial enlarged view of the apparatus of FIG. 8; and,
FIG. 8 is a perspective view of an apparatus for cleaning air filters shown in full.
The broken lines showing air filter and actuating trigger are for environmental purposes only and form no part of the claimed design.
The apparatus for cleaning air filters in FIG. 8 is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. The broken away lines shown in FIGS. 1 through 7 views are for purposes of allowing the enlarged, partial views of the full apparatus to fit on the drawing page.