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PCE
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CPC Subgroup Additional Only
H01J 2237/0456

Supports

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Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging > Means for controlling the discharge > Diaphragms > Supports

1 direct subcode

Child Classifications

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  • H01J 2237/0458 movable, i.e. for changing between differently sized apertures