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Class Information
Number: 236/27
Name: Automatic temperature and humidity regulation > Closed fluid heaters > Pressure-operated > With balancing pressure chamber
Description: Devices where the effect of the heater-pressure is counterbalanced by a closed pressure-chamber.

Patents under this class:

Patent Number Title Of Patent Date Issued
6849234 System and method for controlling an ultraviolet air treatment device for return air duct applications Feb. 1, 2005

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