FIG. 1 is an upper perspective view of the design;
FIG. 2 is a lower perspective view of the design;
FIG. 3 is a top plan view of the design;
FIG. 4 is a bottom plan view of the design;
FIG. 5 is a front elevation view of the design;
FIG. 6 is a rear elevation view of the design;
FIG. 7 is a right side elevation view of the design; and,
FIG. 8 is a left side elevation view of the design.
The broken lines depict portions of the glass grinding apparatus that form no part of the claimed design.
	
	  
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