F28F 1/30 the means being attachable to the element (F28F1/32 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: the means being attachable to the element
CPC: the means being attachable to the element (F28F1/32 takes precedence)
Full Title
Full titles differ between systems:
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 only outside the tubular element > and extending transversely > the means being attachable to the element
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 only outside the tubular element > and extending transversely (F28F1/38 takes precedence) > the means being attachable to the element (F28F1/32 takes precedence)
No child classifications to compare. This is a leaf node in both IPC and CPC.