DIFF Subgroup
C25B 9/21 two or more diaphragms
Introduced: January 2021
Full Title
Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features > Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof > with diaphragms > two or more diaphragms
No child classifications to compare. This is a leaf node in both IPC and CPC.