IPC Subgroup
H01J 47/1 Spark counters
Introduced: January 1980
Last revised: January 2006
Full Title
Tubes for determining the presence, intensity, density or energy of radiation or particles > Spark counters
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS