DIFF Subgroup
F22B 37/28 involving reversal of direction of flow
Introduced: September 1968
Full Title
Component parts or details of steam boilers > applicable to more than one kind or type of steam boiler > Steam-separating arrangements > involving reversal of direction of flow
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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