DIFF Subgroup
F01D 11/122 Full Title
Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J ) > for sealing space between rotor blade tips and stator (specially-shaped blade tips therefor F01D5/20) > using a rubstrip, e.g. erodible. deformable or resiliently-biased part
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.