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Class Information
Number: 236/80B
Name: Automatic temperature and humidity regulation > Motors > Fluid-operated > Relay > Shunt > Plural main valves

Patents under this class:

Patent Number Title Of Patent Date Issued
5944257 Bulb-operated modulating gas valve with minimum bypass Aug. 31, 1999
4627569 Four function pneumatic controller Dec. 9, 1986
4323112 No energy band temperature control Apr. 6, 1982
4076171 Damper control apparatus Feb. 28, 1978
4019678 Mixing valve Apr. 26, 1977
3997107 Servo modulating regulating control system Dec. 14, 1976
3980229 Temperature controlled regulator Sep. 14, 1976
3934795 Dual duct variable volume air conditioning system Jan. 27, 1976

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