Cartridge brush

FIG. 1 is a first, bottom perspective view of a cartridge brush;

FIG. 2 is a second, bottom perspective view of the cartridge brush of FIG. 1 ;

FIG. 3 is a first, top perspective view of the cartridge brush of FIG. 1 ;

FIG. 4 is a second, top perspective view of the cartridge brush of FIG. 1 ;

FIG. 5 is an enlarged bottom view of the cartridge brush of FIG. 1 ;

FIG. 6 is an enlarged top view of the cartridge brush of FIG. 1 ;

FIG. 7 is a first side view of the cartridge brush of FIG. 1 , the opposite side being identical thereto; and,

FIG. 8 is a second side view of the cartridge brush of FIG. 1 , the opposite side being identical thereto.

The broken lines shown in FIGS. 1-8 are environmental structure and form no part of the claimed design.