US D492019 S1
FIG. 1 is a perspective view of an air cleaning device showing our new design;
FIG. 2 is a right view of FIG. 1;
FIG. 3 is a left view of FIG. 1;
FIG. 4 is a top view of FIG. 1; and,
FIG. 5 is front view of FIG. 1.
The phantom line shown in the drawings forms no part of the claimed design(s).