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Class Information
Number: 236/57
Name: Automatic temperature and humidity regulation > Traps > Thermostatic > Expanding fluid > Bourdon type
Description: Automatic steam-traps in which the drain-valve is directly operated by a thermostat of the expanding-fluid type in the shape of a Bourdon tube.

Patents under this class:

Patent Number Title Of Patent Date Issued
7693591 HVAC zone control panel with checkout utility Apr. 6, 2010
4825047 Temperature-responsive controller for waterbed mattress heaters Apr. 25, 1989
4289815 Cold water-insoluble polyvinyl alcohol pouch for the controlled release of active ingredients Sep. 15, 1981

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