79178173
Aug 4, 2015
Dec 13, 2016
Ventilating and cooling apparatus and plants, namely, electric shutter fans, electric metal cone fans, electric butterfly cone fans, electric circulation fans, fan jets in the nature of ventilating circulation fans, cooling pads in the nature of cooling evaporators, destratificators in the nature of ventilating circulation fans, heat exchangers, not being parts of machines
Environmental Control Apparatus