US PATENT SUBCLASS 165 / 232
.~.~.~ Operated by timer or programmer

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

200  DF  WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL {14}
201  DF  .~ Having heating and cooling capability {13}
231  DF  .~.~ Congealed material (e.g., frost, etc.) or condensation removal or prevention {2}
232.~.~.~ Operated by timer or programmer

DEFINITION

Classification: 165/232

Operated by timer or programmer:

(under subclass 231) Subject matter including a means for measuring or recording time; or a device for controlling the heat transfer apparatus at a predetermined time; or a means for scheduling or coordinating the performance of a repetitive sequence of operations; wherein said means or device selects a period of time that said first or second means operated.

SEE OR SEARCH CLASS

62, Refrigeration,

155, for refrigeration system having defrosting means and a time or program actuator.