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Class Information
Number: 236/81
Name: Automatic temperature and humidity regulation > Motors > Fluid-operated > Relay > Snap-acting
Description: Devices in which the relay does not operate on slight changes in temperature, but its operating force is stored up during a certain movement of the temperature-responsive device and then suddenly moves through its entire movement.

Patents under this class:

Patent Number Title Of Patent Date Issued
4832260 Emergency ventilation system May. 23, 1989
3955791 Pilot operated fluid control valve May. 11, 1976

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