DIFF Subgroup Additional Only
Y10T 428/249955 Void-containing component partially impregnated with adjacent component
Full Title
Stock material or miscellaneous articles > Web or sheet containing structurally defined element or component > Composite having voids in a component [e.g., porous, cellular, etc.] > Void-containing component partially impregnated with adjacent component
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Note: 3 CPC extensions are marked as secondary classification only.