52 / | HD | STATIC STRUCTURES (E.G., BUILDINGS) |
782.1 | DF | COMPOSITE PREFABRICATED PANEL INCLUDING ADJUNCTIVE MEANS {7} |
783.1 | DF | .~ Sandwich or hollow with sheet-like facing members {13} |
793.1 | DF | .~.~ Multicellular core {1} |
793.11 | .~.~.~ Elongated strip-like laterally spaced elements form core |