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PCE
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DIFF Subgroup
H01J 37/295

Electron or ion diffraction tubes

Introduced: July 1974

Title

Titles differ between systems:

IPC: Electron- or ion-diffraction tubes

CPC: Electron or ion diffraction tubes

Full Title

Full titles differ between systems:

IPC:

Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof > Electron or ion microscopes; Electron- or ion-diffraction tubes > Electron- or ion-diffraction tubes

CPC:

Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof (H01J33/00, H01J40/00, H01J41/00, H01J47/00, H01J49/00 take precedence) > Electron or ion microscopes; Electron or ion diffraction tubes > Electron or ion diffraction tubes

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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