US PATENT SUBCLASS 165 / 246
.~.~.~ Responsive to pressure

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


165 /   HD   HEAT EXCHANGE

200  DF  WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL {14}
201  DF  .~ Having heating and cooling capability {13}
244  DF  .~.~ Means to control fan or pump to regulate supply air flow or supply water flow {3}
246.~.~.~ Responsive to pressure

DEFINITION

Classification: 165/246

Responsive to pressure:

(under subclass 244) Subject matter wherein the delivered rate is varied according to a measured pressure.