Rear bumper for an automobile

FIG. 1 is a perspective view of a rear bumper for an automobile, the perspective view taken from behind and above the rear bumper;

FIG. 2 is a plan view thereof, taken from a rear of an autombile;

FIG. 3 is a top thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is an end view thereof, taken from a side of an automobile, the opposite end view being a mirror image; and,

FIG. 6 is a perspective view thereof attached to an automobile.

The broken line showing of an automobile is for illustrative purposes only and forms no part of the claimed design. The broken line showing of internal surfaces of the rear bumper defines the bounds of the claimed design but does not form part of the claimed design.