| 29 / | HD | METAL WORKING |
| 592 | DF | METHOD OF MECHANICAL MANUFACTURE {54} |
| 592.1 | DF | .~ Electrical device making {14} |
| 825 | DF | .~.~ Conductor or circuit manufacturing {8} |
| 868 | DF | .~.~.~ Assembling elongated conductors, e.g., splicing, etc. {2} |
| 869 | DF | .~.~.~.~ With end-to-end orienting {2} |
| 870 | ![]() | .~.~.~.~.~ Including fluid evacuating or pressurizing |