DIFF Subgroup
F22B 3/04 by drop in pressure of high-pressure hot water within pressure-reducing chambers, e.g. in accumulators
Introduced: September 1968
Full Title
Other methods of steam generation; Steam boilers not provided for in other groups of this subclass > by drop in pressure of high-pressure hot water within pressure-reducing chambers, e.g. in accumulators
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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