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PCE
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DIFF Main Group
F22B 11/00

Steam boilers of combined fire-tube type and water-tube type, i.e. steam boilers of fire-tube type having auxiliary water tubes

Introduced: September 1968

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

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  • F22B 11/02 the fire tubes being in upright arrangement IPC+CPC Available in IPC and CPC
  • F22B 11/04 the fire tubes being in horizontal arrangement IPC+CPC Available in IPC and CPC