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Class Information
Number: 236/85
Name: Automatic temperature and humidity regulation > Motors > Fluid-operated > Relay > Pressure-operated
Description: Devices wherein the relay is operated by a device responsive to changes in pressure in the fluid to be regulated.

Patents under this class:

Patent Number Title Of Patent Date Issued
7980481 Thermally controlled process interface Jul. 19, 2011
4756474 Duct pressure powered air volume controller Jul. 12, 1988

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