IPC Subgroup
H01J 1/308 Semiconductor cathodes, e.g. cathodes with PN junction layers
Introduced: January 2000
Last revised: January 2006
Full Title
Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps > Main electrodes > Cold cathodes > Semiconductor cathodes, e.g. cathodes with PN junction layers
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS