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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup Additional Only
H01J 2237/2605

operating at elevated pressures, e.g. atmosphere

Full Title

Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging > Electron or ion microscopes > Details > operating at elevated pressures, e.g. atmosphere

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.