The ornamental design for a radiatorgrille for an automobile, as shown and described.
FIG. 1 is a front elevational view of a radiator grille for an automobile in accordance with our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a front-right-top side perspective view thereof;
FIG. 7 is a front-left-bottom side perspective view thereof;
FIG. 8 is an enlarged cross-sectional view thereof, taken along a section line 8-8′ in FIG. 1; and,
FIG. 9 is an enlarged cross-sectional view thereof, taken along a section line 9-9′ in FIG. 1.
The broken line shown on the radiator grille is for purpose of illustrating environmental structure and forms no part of the claimed design. The rear view of the radiator grille forms no part of the claimed design.