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} |
874 | .~.~.~ Contact or terminal manufacturing {3} | |
875 | DF | .~.~.~.~> By powder metallurgy |
876 | DF | .~.~.~.~> By assembling plural parts {5} |
885 | DF | .~.~.~.~> With coating |