US PATENT SUBCLASS 126 / 656
.~.~.~.~ Axis of conduit is curved (e.g., helical or serpentine)

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

569  DF  SOLAR HEAT COLLECTOR {18}
634  DF  .~ With means to convey fluent medium through collector {7}
651  DF  .~.~ Conduit absorber structure {9}
652  DF  .~.~.~ Surrounded by transparent enclosure {5}
656.~.~.~.~ Axis of conduit is curved (e.g., helical or serpentine)

DEFINITION

Classification: 126/656

Axis of conduit is curved (e.g., helical or serpentine):

(under subclass 652) Apparatus wherein the fluent confining means is shaped in such a manner that the fluid follows a circuitous path. [figure]