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DIAMOND MACHINE TOOLS FOR CUTTING, GRINDING, MACHINING AND DRESSING, NAMELY, DIAMOND POLYCRYSTALLINE AND CUBIC BORON NITRITE TOOLS FOR MACHINING OF NON-FERROUS AND FERROUS METALS AND NON-METALLIC MATERIALS; WHEELDRESSERS; DIAMOND ROTARY DRESSERS; DIAMOND AND CUBIC BORON NITRITE GRINDING WHEELS; POLYCRYSTALLINE CUBIC BORON NITRITE AND DIAMOND SHAPED CUTTING TOOLS AND DRESSERS; ROTARY DRESSER TOOLS AND SPINDLES; REVERSE PLATED DIAMOND ROLLS AND ELECTROPLATED DIAMOND AND CUBIC BORON NITRIDE MACHINING TOOLS; MEMORY DISC DIAMOND TOOLS; CONTACT LENS DIAMOND TOOLS; POLYCRYSTALLINE CUTTING TOOLS FOR METALLIC AND NON-METALLIC MATERIALS; IMPREGNATED GRIP TOOLS; DIAMOND CORE BITS; DIAMOND SAW BLADES