Substrate retaining ring

FIG. 1 is a perspective view, observed from top of a substrate retaining ring showing our new design;

FIG. 2 is a perspective view, observed from bottom thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view, rear view, right side view and left side view thereof;

FIG. 6 is an enlarged cross-section view, taken along the line 6 - 6 of part 6 of FIG. 3 thereof;

FIG. 7 is an enlarged cross-section view, taken along the line 7 - 7 of part 7 of FIG. 3 thereof; and,

FIG. 8 is an enlarged cross-section view, taken along the line 8 - 8 of part 8 of FIG. 3 thereof.