DIFF Subgroup
H01M 8/20 Indirect fuel cells, e.g. fuel cells with redox couple being irreversible (H01M8/18 takes precedence)
Introduced: July 1974
Title
Titles differ between systems:
IPC: Indirect fuel cells, e.g. fuel cells with redox couple being irreversible
CPC: Indirect fuel cells, e.g. fuel cells with redox couple being irreversible (H01M8/18 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Fuel cells; Manufacture thereof > Indirect fuel cells, e.g. fuel cells with redox couple being irreversible
CPC:
Fuel cells; Manufacture thereof > Indirect fuel cells, e.g. fuel cells with redox couple being irreversible (H01M8/18 takes precedence)
No child classifications to compare. This is a leaf node in both IPC and CPC.