Temperature controllers in the nature of pneumatic controllers for air conditioning units; zone control systems for home heating and air conditioning comprising of a series of thermostats connected to a control panel which opens and closes a series of dampers; electrical humidifier controls; thermostats; electrical controllers for air conditioning units

'air':10,20,48 'close':36 'compris':22 'condit':11,21,49 'connect':28 'control':2,8,14,31,43,46 'damper':40 'electr':41,45 'heat':18 'home':17 'humidifi':42 'natur':5 'open':34 'panel':32 'pneumat':7 'seri':25,38 'system':15 'temperatur':1 'thermostat':27,44 'unit':12,50 'zone':13

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