I claim the ornamental design for a diamond concrete cutter chain, as shown and described.
FIG. 1 is a right-front perspective view of the diamond concrete cutter chain;
FIG. 2 is a right side view of the diamond concrete cutter chain shown in FIG. 1;
FIG. 3 is a front view of the diamond concrete cutter chain shown in FIG. 1;
FIG. 4 is a rear of the diamond concrete cutter chain shown in FIG. 1;
FIG. 5 is a left side view of the diamond concrete cutter chain shown in FIG. 1;
FIG. 6 is a top view of the diamond concrete cutter chain shown in FIG. 1; and,
FIG. 7 is a bottom view of the diamond concrete cutter chain shown in FIG. 1.
The subject matter shown in dashed lines, and any surfaces of the design not shown, including interior surfaces, form no part of the claimed invention.