The ornamental design for a rearbumper for an automobile, as shown and described.
FIG. 1 is a front elevational view of a rear bumper for an automobile in accordance with our new design;
FIG. 2 is a rear elevational view of the rear bumper for an automobile in accordance with our new design;
FIG. 3 is a right side elevational view of the rear bumper for an automobile in accordance with our new design;
FIG. 4 is a left side elevational view of the rear bumper for an automobile in accordance with our new design;
FIG. 5 is a top plan view of the rear bumper for an automobile in accordance with our new design;
FIG. 6 is a bottom plan view of the rear bumper for an automobile in accordance with our new design;
FIG. 7 is a perspective view of the rear bumper for an automobile when viewed from a right-top side in accordance with our new design; and,
FIG. 8 is a perspective view of the rear bumper for an automobile when viewed from a left-bottom side in accordance with our new design.
The broken line showing of the rear bumper for an automobile is for purpose of illustrating environmental structure and forms no part of the claimed design.