IPC Subgroup
H01J 40/14 Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
Introduced: January 1980
Last revised: January 2006
Full Title
Photoelectric discharge tubes not involving the ionisation of a gas > Details > Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS