CPC Subgroup Additional Only
Y10T 428/249971 Preformed hollow element-containing
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.] > Preformed hollow element-containing
3 direct subcodes
Child Classifications
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- Y10T 428/249972 Resin or rubber element
- Y10T 428/249973 Mineral element
- Y10T 428/249974 Metal- or silicon-containing element