DIFF Subgroup
F22B 27/04 built-up from water tubes (F22B27/12 - F22B27/16 take precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: built-up from water tubes
CPC: built-up from water tubes (F22B27/12 - F22B27/16 take precedence)
Full Title
Full titles differ between systems:
IPC:
Instantaneous or flash steam boilers > built-up from water tubes
CPC:
Instantaneous or flash steam boilers > built-up from water tubes (F22B27/12 - F22B27/16 take precedence)
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
Child Classifications
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