CPC Subgroup
H01J 3/14 Arrangements for focusing or reflecting ray or beam (H01J3/02, H01J3/04 take precedence)
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 (H01J3/02, H01J3/04 take precedence)
3 direct subcodes
Child Classifications
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