| 126 / | HD | STOVES AND FURNACES |
|
| 569 | DF | SOLAR HEAT COLLECTOR {18} |
| 634 | DF | .~ With means to convey fluent medium through collector {7} |
| 651 |  | .~.~ Conduit absorber structure {9} |
| 652 | DF | .~.~.~> Surrounded by transparent enclosure {5} |
| 658 | DF | .~.~.~> Having heat-absorbing fin or plate {4} |
| 663 | DF | .~.~.~> Plural conduits {2} |
| 666 | DF | .~.~.~> Rectangular metallic conduit {1} |
| 668 | DF | .~.~.~> Rectangular nonmetallic conduit {1} |
| 670 | DF | .~.~.~> Circular metallic conduit {1} |
| 672 | DF | .~.~.~> Circular nonmetallic conduit {1} |
| 674 | DF | .~.~.~> Absorber having extended surface {1} |
| 676 | DF | .~.~.~> Particular absorber material {1} |