DIFF Subgroup
F22D 5/14 responsive to thermal expansion and contraction, e.g. of solid elements
Introduced: September 1968
Full Title
Controlling water feed or water level; Automatic water feeding or water-level regulators > responsive to thermal expansion and contraction, e.g. of solid elements
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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