7 (Based on Use in Commerce) and (Based on 44(e)) Machines for coating the surfaces of metals, metal alloys, metal graphite, graphite, ceramics, ceramic-metal mixtures, oxides, carbides, silicides, nitrides, plastics, and composite materials, the machines being primarily composed of energy sources, reactors, mechanical manipulation equipment and control equipment; machine parts made of common or precious metals, of ceramics, of plastic, and composite materials having surface protection against corrosion, abrasion, erosion/cavitation, cold welding, and frictional oxidation, namely, machine tools for cutting and non-cutting shaping; guiding elements and clamping bodies as machine parts, namely, [ novels ] * nozzles * and work pieces in the nature of metal and/or plastic pipes, pressure cylinders, sleeves and bearings