US PATENT SUBCLASS 236 / 62
.~.~.~ With separate float

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

*  DD  AIR-RELIEF VALVES {1}
*  DD  .~ Radiator type {1}
*  DD  .~.~ Thermostatic {5}
62.~.~.~ With separate float

DEFINITION

Classification: 236/62

(under the class definition) Air relief-valves controlled by both thermostatic and float-controlled means, the float being distinct from the thermostat.