Bilge pumps; Drilling machines; Hydraulic pumps; Machine parts, namely, couplers and semi-couplers of synthetic material; Machine tools for removing waste material; Mine borers; Mineworking machines; Mining drill sharpeners; Oil field equipment, namely, drilling rig mechanization machines and devices; Oil refining machines; Pistons for engines; Pumps as parts of machines, motors and engines; Pumps for machines; Sludge pumps; Suction pumps; Valves as machine components; Valves for pumps