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PCE
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DIFF Subgroup
F28F 3/042

Full Title

Plate-like or laminated elements; Assemblies of plate-like or laminated elements (specially adapted for movement F28F5/00) > Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations (F28F3/08 takes precedence) > the means being integral with the element

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.