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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.