29 / | HD | METAL WORKING |
|
592 | DF | METHOD OF MECHANICAL MANUFACTURE {54} |
592.1 | DF | .~ Electrical device making {14} |
602.1 | DF | .~.~ Electromagnet, transformer or inductor {6} |
603.01 | DF | .~.~.~ Magnetic recording reproducing transducer (e.g., tape head, core, etc.) {4} |
603.07 | DF | .~.~.~.~ Fabricating head structure or component thereof {7} |
603.16 |  | .~.~.~.~.~ Machining magnetic material (e.g., grinding, etching, polishing) {2} |
603.17 | DF | .~.~.~.~.~.~> Employing workholding means |
603.18 | DF | .~.~.~.~.~.~> By etching |