US PATENT SUBCLASS 165 / 261
.~.~.~.~ Sequentially activated heat sources or cool sources

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}
253  DF  .~.~ Temperature sensor controlling temperature {4}
260  DF  .~.~.~ Variable rate of heating or cooling (e.g., plural stages, etc.) {1}
261.~.~.~.~ Sequentially activated heat sources or cool sources {1}
262  DF  .~.~.~.~.~> Timer

DEFINITION

Classification: 165/261

Sequentially activated heat sources or cool sources:

(under subclass 260) Subject matter including a plurality of heating means initiated one after another or a plurality of cooling means initiated one after another.