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PCE
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CPC Subgroup
F22B 21/36

involving an upper drum or headers mounted at the top of the combustion chamber

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 grouped in panel form surrounding the combustion chamber, i.e. radiation boilers > involving an upper drum or headers mounted at the top of the combustion chamber

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