Hairbrush back and handle unit

FIG. 1 is a top and right side perspective view of a hairbrush back and handle unit showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is an end elevational view as seen from the left of FIG. 3;

FIG. 5 is an elevational view of the opposite end thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view of a second embodiment of the design shown in FIGS. 1-6;

FIG. 8 is a right side elevational view thereof, the left side being a mirror image;

FIG. 9 is a top plan view of a third embodiment of the design shown in FIGS. 1-6;

FIG. 10 is a right side elevational view thereof, the left side being a mirror image;

FIG. 11 is a perspective view as seen from the bottom and right end of FIG. 8;

FIG. 12 is an end elevational view as seen from the left of FIG. 8;

FIG. 13 is a perspective view as seen from the bottom and right end of FIG. 10; and,

FIG. 14 is an end elevational view as seen from the left of FIG. 10.

The broken line showing of bristles is for illustrative purposes only and forms no part of the claimed design.