US PATENT SUBCLASS 236 / 92 C
.~.~ Pressure- and temperature-actuated relief valves

Current as of: June, 1999
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236 /   HD   AUTOMATIC TEMPERATURE AND HUMIDITY REGULATION

*  DD  THERMOSTATIC {9}
92 R  DF  .~ With pressure control {4}
92 C.~.~ Pressure- and temperature-actuated relief valves

Unofficial Alpha Subclasses: R A B C D

DEFINITION

Classification: 236/92

(under the class definition) Devices operated by a thermostat and pressure-responsive means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

61, for radiator air relief means controlled by thermostat and pressure.