The ornamental design for a grille for mounting onto the license plate holder in the front bumper of an automobile, as shown and described.
FIG. 1 is a perspective view of a grille for mounting onto the license
plate holder in the front bumper of an automobile showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a side elevational view thereof; and
FIG. 5 is a front perspective view of a grille for mounting onto the
license plate holder in the front bumper of an automobile showing a second
embodiment of my new design, it being understood that the rear is
substantially flat and unornamented.