US PATENT SUBCLASS 126 / 575
.~.~.~ With timer

Current as of: June, 1999
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126 /   HD   STOVES AND FURNACES

569  DF  SOLAR HEAT COLLECTOR {18}
572  DF  .~ With control means energized in response to actuator stimulated by condition sensor {3}
573  DF  .~.~ Including sun position tracking sensor {7}
575.~.~.~ With timer

DEFINITION

Classification: 126/575

With timer:

(under subclass 573) Apparatus which further includes an instrument for measuring intervals of time to move the converting means.