The ornamental design for the “plate for mounting abrasive elements to a drivedisk of concrete grinding and finishing machines”, as shown and described.
FIG. 1 is a front plan view of the plate of the present invention;
FIG. 2 is a rear plan view thereof;
FIG. 3 is a left side view thereof, the right side view being a mirror image thereof; and,
FIG. 4 is a bottom end view thereof, the top end view being a mirror image thereof.