FIG. 1 is an isometric view of a top, front, and left side of an ornamental design for a cover plate for a fragrance dispenser further illustrating in dashed lines one type of dispenser on which the cover plate of the present invention may be disposed;

FIG. 2 is a front elevational view of the cover plate of FIG. 1;

FIG. 3 is a rear elevational view of the cover plate of FIG. 1 further illustrating in dashed lines a hinge disposed on the cover plate;

FIG. 4 is a right side elevational view of the cover plate of FIG. 1;

FIG. 5 is a left side elevational view of the cover plate of FIG. 1;

FIG. 6 is a top plan view of the cover plate of FIG. 1; and,

FIG. 7 is a bottom plan view of the cover plate of FIG. 1 further illustrating in dashed lines a protruding member disposed on the cover plate.

The subject matter shown above in dashed lines forms no part of the claimed invention.