428 / | HD | STOCK MATERIAL OR MISCELLANEOUS ARTICLES |
544 | DF | ALL METAL OR WITH ADJACENT METALS {31} |
546 | DF | .~ Having metal particles {4} |
548 | DF | .~.~ Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, etc.) {5} |
553 | DF | .~.~.~ Nonparticulate metal component {5} |
564 | .~.~.~.~ Nonmetal particles in particulate component |