automatic time switches, electric cell switches, pressure switches, wind powered switches and pressure regulators for switches, all for use as a component of air compressors, pumps, and/or vacuum cleaners, and as a component of heating, ventilation, air conditioning, and/or refrigeration systems

'air':24,37 'and/or':27,39 'automat':1 'cell':5 'cleaner':29 'compon':22,33 'compressor':25 'condit':38 'electr':4 'heat':35 'power':10 'pressur':7,13 'pump':26 'refriger':40 'regul':14 'switch':3,6,8,11,16 'system':41 'time':2 'use':19 'vacuum':28 'ventil':36 'wind':9

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