PARTS OF MACHINES, MACHINE TOOLS, MOTORS AND ENGINES, NAMELY [ WORK PIECES ] * WORKPIECES* WITH FRICTION-INCREASING LAYERS, NAMELY ENGINE COMPONENTS FOR MACHINES AND LAND VEHICLES, GEAR SYSTEMS FOR MACHINES, SHAFT-HUB-JOINTS FOR ENGINES AND MACHINES, [ COGWHEELS ] AND SHAFTS FOR ENGINES AND MACHINES; [ SHAPED PARTS MADE FROM NI-DIAMOND, NAMELY ENGINE COMPONENTS FOR MACHINES AND LAND VEHICLES, GEAR SYSTEMS FOR] [ MACHINES ] * MACHINES, * SHAFT-HUB-JOINTS FOR MACHINES AND ENGINES, COGWHEELS AND...