DIFF Subgroup
H01J 3/30 by electric fields only
Introduced: September 1968
Full Title
Details of electron-optical or ion-optical arrangements common to two or more basic types of discharge tubes or lamps > Arrangements for deflecting ray or beam > along one straight line or along two perpendicular straight lines > by electric fields only
No child classifications to compare. This is a leaf node in both IPC and CPC.