US PATENT SUBCLASS 126 / 583
.~.~ Of fluent medium

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}
583.~.~ Of fluent medium {4}
584  DF  .~.~.~> Pressure responsive
585  DF  .~.~.~> Temperature responsive {4}
590  DF  .~.~.~> Fluid level responsive
591  DF  .~.~.~> Of fluid flow {1}

DEFINITION

Classification: 126/583

Of fluent medium:

(under subclass 572) Apparatus wherein the sensing means operates a device to affect the fluent medium.