[Class : 7] Filtering Machines, Cartridge For Filtering Machines, Separators, Steam/ Oil Separators, Water Separators, Water Heaters (Parts Of Machines) & Oil Refining Machines, Processing Machines Using Processing Gases For The Treatment Of Objects, Gas Converters, Gas Cutting Machines, Machines For Generating Gas By Electrolysis, Oil & Gas Extraction And Mining Equipments...