7 HIGH AND LOW PRESSURE COMPRESSORS FOR AIR AND OTHER GASES; AND COMPRESSOR SYSTEMS COMPRISING MOTORS, COMPRESSOR BLOCKS, SEPARATORS AND SAFETY VALVES
9 APPARATUS FOR FILLING RESPIRATOR BOTTLES WITH COMPRESSED AIR TO PRE-SPECIFIED PRESSURES, COMPRISING COMPRESSORS, AIR TREATMENT CARTRIDGES, SAFETY VALVES AND CONTROLS
11 AIR PURIFICATION AND COOLING SYSTEMS, COMPRISING FANS, HEAT EXCHANGERS, COOLERS, CYLINDER HEADS, ALL NOT FOR LAND VEHICLES