US PATENT SUBCLASS 126 / 672
.~.~.~ Circular nonmetallic conduit

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}
672.~.~.~ Circular nonmetallic conduit {1}
673  DF  .~.~.~.~> Having internal partition

DEFINITION

Classification: 126/672

Circular nonmetallic conduit:

(under subclass 651) Apparatus wherein the fluent confining means is made of material other than metal and defines a flow chamber which has a circular cross-sectional shape.