US PATENT SUBCLASS 165 / 59
.~ With ventilation

Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

58  DF  HEATING AND COOLING {3}
59.~ With ventilation

DEFINITION

Classification: 165/59

(under subclass 58) Apparatus including means to supply fresh air to a chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

248+, for automatic ventilation control.

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62, Refrigeration,

409, 410+ and 427 for refrigerated and ventilated enclosures.