IPC Subgroup
G05D 21/02 characterised by the use of electric means
Introduced: September 1968
Last revised: January 2006
Full Title
Control of chemical or physico-chemical variables, e.g. pH-value > characterised by the use of electric means
Classification Context
- Section:
- PHYSICS
- Class:
- CONTROLLING; REGULATING
- Subclass:
- SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES