DIFF Main Group
G05D 21/00 Control of chemical or physico-chemical variables, e.g. pH value
Introduced: September 1968
Title
Titles differ between systems:
IPC: Control of chemical or physico-chemical variables, e.g. pH-value
CPC: Control of chemical or physico-chemical variables, e.g. pH value
Full Title
Full titles differ between systems:
IPC:
Control of chemical or physico-chemical variables, e.g. pH-value
CPC:
Control of chemical or physico-chemical variables, e.g. pH value
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
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