Cleaning Brush

FIG. 1 is a front and bottom perspective view of a cleaning brush, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an enlarged view of portion 8 of FIG. 1 .

The dot-dash broken lines depict the boundaries of the enlargements that form no part of the claimed design.