IPC Subgroup
H01J 3/14 Arrangements for focusing or reflecting ray or beam
Introduced: September 1968
Last revised: January 2006
Full Title
Details of electron-optical or ion-optical arrangements common to two or more basic types of discharge tubes or lamps > Arrangements for focusing or reflecting ray or beam
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
3 direct subcodes
Child Classifications
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