| 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 | | .~.~ Filtering vaporous or liquid metal {5} |
| 408 | DF | .~.~.~> Alkali metal, singly or in combination |
| 409 | DF | .~.~.~> Magnesium(Mg) |
| 410 | DF | .~.~.~> Noble metal, singly or in combination |
| 411 | DF | .~.~.~> Copper(Cu) |
| 412 | DF | .~.~.~> Aluminum(Al) |