US PATENT SUBCLASS 236 / *
.~ Thermostatic

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

*  DD  TRAPS {3}
*.~ Thermostatic {3}
55  DF  .~.~> With float-controlled pilot
56  DF  .~.~> Expanding fluid {2}
59  DF  .~.~> Expanding solid {1}