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DIFF Subgroup
F22B 21/40

built-up from water tubes arranged in a comparatively long vertical shaft, i.e. tower boilers

Introduced: September 1968

Full Title

Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically > built-up from water tubes arranged in a comparatively long vertical shaft, i.e. tower boilers

No child classifications to compare. This is a leaf node in both IPC and CPC.