DIFF Subgroup
F24H 1/46 Water heaters having plural combustion chambers
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters > Water heaters having plural combustion chambers
CPC:
Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters (steam boilers F22B) > Water heaters having plural combustion chambers
No child classifications to compare. This is a leaf node in both IPC and CPC.