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PCE
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DIFF Subgroup
F28F 1/44

and being formed of wire mesh

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Tubular elements; Assemblies of tubular elements > Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses > the means being both outside and inside the tubular element > and being formed of wire mesh

CPC:

Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F5/00) > Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses (crimped or corrugated elements F28F1/06, F28F1/08) > the means being both outside and inside the tubular element > and being formed of wire mesh

No child classifications to compare. This is a leaf node in both IPC and CPC.