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VALVES OF METAL BEING OTHER THAN MACHINE PARTS

MACHINE TOOL ACCESSORIES, NAMELY, AIR AND HYDRAULIC CYLINDERS, ROTATING WITH AND WITHOUT ADAPTORS; CHUCK JAWS; PNEUMATIC AND HYDRAULIC CHUCK OPERATING MECHANISMS, CONSISTING OF A CHUCK-CONNECTING DRAWROD AND A CYLINDER ENCLOSING AN ACTUATING PISTON; AIR/OIL PRESSURE BOOSTERS; AIR-OIL TANKS CONTAINING MEMBERS MOVEABLE BY FLUID PRESSURE, AND PARTS THEREOF