CPC Subgroup Additional Only
H01J 2237/1405 Constructional details
Full Title
Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging > Lenses > magnetic > Constructional details
2 direct subcodes
Child Classifications
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- H01J 2237/141 Coils
- H01J 2237/1415 Bores or yokes, i.e. magnetic circuit in general