Heat exchangers other than parts for machines; Hot air blowers; Ventilators for energy recovery; Electric cooling fans; Air Cooling apparatus for commercial use and for household use;

'air':9,18 'apparatus':20 'blower':10 'commerci':22 'cool':16,19 'electr':15 'energi':13 'exchang':2 'fan':17 'heat':1 'hot':8 'household':26 'machin':7 'part':5 'recoveri':14 'use':23,27 'ventil':11

Heat exchangers being parts of machines; Fans for machine engines; Aerators being machines;

'aerat':11 'engin':10 'exchang':2 'fan':7 'heat':1 'machin':6,9,13 'part':4

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