CPC Subgroup
F22B 7/16 Component parts thereof; Accessories therefor, e.g. stay-bolt connections
Full Title
Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body > Component parts thereof; Accessories therefor, e.g. stay-bolt connections
2 direct subcodes
Child Classifications
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