DIFF Subgroup
F22B 33/04 of boilers of furnace-tube type with boilers of water-tube type
Introduced: September 1968
Full Title
Steam-generation plants, e.g. comprising steam boilers of different types in mutual association > Combinations of boilers having a single combustion apparatus in common > of boilers of furnace-tube type with boilers of water-tube type
No child classifications to compare. This is a leaf node in both IPC and CPC.