The ornamental design for a carseatcover for a car back seat, as shown and described.
FIG. 1 is a perspective view of the front of a car seat cover for a car back seat constructed in accordance with the present invention, where the car seat cover has a front; sides; openings positioned such that seat belts and head rests may extend therethrough;
FIG. 2 is a section view of a car seat cover for a car back seat as shown in FIG. 1, as installed on a car back seat. The car back seat shown with dashed lines forms no part of the claimed design.
FIG. 3 is a front view of a car seat cover for a car back seat as shown in FIG. 1;
FIG. 4 is a side view of a car seat cover for a car back seat as shown in FIG. 1,;
FIG. 5 is a top view of a car seat cover for a car back seat as shown in FIG. 1;
FIG. 6 is a back view of a car seat cover for a car back seat as shown in FIG. 1; and,
FIG. 7 is a bottom view of a car seat cover for a car back seat as shown in FIG. 1.
The finely spaced dashed lines in the drawings (excepting the car back seat in FIG. 2) represent stitching, and form part of the claimed design.