FIG. 1 is a front elevational view of a first embodiment of a molded surface of a concrete product;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a perspective view thereof;

FIG. 7 is a front elevational view of a second embodiment of a molded surface of a concrete product;

FIG. 8 is a right side view thereof;

FIG. 9 is a left side view thereof;

FIG. 10 is a top view thereof;

FIG. 11 is a bottom view thereof; and,

FIG. 12 is a perspective view thereof.

The broken lines in the drawing views are included for the purpose of illustrating portions of the molded surface of a concrete product that form no part of the claimed design.