FIG. 1 is a lower, right perspective view of a first embodiment of a molded surface of a concrete product according to our new design;

FIG. 2 is a front elevation view of the surface depicted in FIG. 1;

FIG. 3 is a top plan view of the surface depicted in FIG. 1;

FIG. 4 is a bottom plan view of the surface depicted in FIG. 1;

FIG. 5 is right side elevation view of the surface depicted in FIG. 1;

FIG. 6 is a left side elevation view of the surface depicted in FIG. 1;

FIG. 7 is a lower, right perspective view of a second embodiment of a molded surface of a concrete product according to our new design;

FIG. 8 is a front elevation view of the surface depicted in FIG. 7;

FIG. 9 is a top plan view of the surface depicted in FIG. 7;

FIG. 10 is a bottom plan view of the surface depicted in FIG. 7;

FIG. 11 is right side elevation view of the surface depicted in FIG. 7;

FIG. 12 is a left side elevation view of the surface depicted in FIG. 7;

FIG. 13 is a lower, right perspective view of a third embodiment of a molded surface of a concrete product according to our new design;

FIG. 14 is a front elevation view of the surface depicted in FIG. 13;

FIG. 15 is a top plan view of the surface depicted in FIG. 13;

FIG. 16 is a bottom plan view of the surface depicted in FIG. 13;

FIG. 17 is right side elevation view of the surface depicted in FIG. 13; and,

FIG. 18 is a left side elevation view of the surface depicted in FIG. 13.

The broken lines in the drawings illustrate an embodiment of the structural environment of a concrete product that includes a molded surface of the design and is not part of the design sought to be patented.