361 / | HD | ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES |
600 | DF | HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS {11} |
679 | DF | .~ For electronic systems and devices {15} |
688 | DF | .~.~ With cooling means {2} |
704 | DF | .~.~.~ Thermal conduction {8} |
717 | .~.~.~.~ For active solid state devices {1} | |
718 | DF | .~.~.~.~.~> For integrated circuit {1} |