Distribution of energy for heating and cooling laboratories and rooms

'cool':7 'distribut':1 'energi':3 'heat':5 'laboratori':8 'room':10

Apparatus and devices for heating, cooling and ventilating of rooms, namely, gas and electric air heaters for laboratory use, air conditioners and ventilating louvers; air conditioning installations

'air':15,20,25 'apparatus':1 'condit':26 'condition':21 'cool':6 'devic':3 'electr':14 'gas':12 'heat':5 'heater':16 'instal':27 'laboratori':18 'louver':24 'name':11 'room':10 'use':19 'ventil':8,23

Electrical controls for apparatus for heating, cooling and ventilating of rooms

'apparatus':4 'control':2 'cool':7 'electr':1 'heat':6 'room':11 'ventil':9

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