Combined seat and backrest unit

Description

FIG. 1 is a perspective view of a combined seat and backrest unit _embodying my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a side elevation view thereof, showing the side opposite that shown in FIG. 1; and

FIG. 5 is a rear elevation view thereof.