75 / | HD | SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES |
330 | DF | PROCESSES {9} |
392 | DF | .~ Producing or treating free metal {10} |
407 | DF | .~.~ Filtering vaporous or liquid metal {5} |
412 | .~.~.~ Aluminum(Al) |