Patent Classification Explorer PCE

DIFF Subgroup

H01J 3/02

Electron guns

Introduced: September 1968

Full Title

Details of electron-optical or ion-optical arrangements common to two or more basic types of discharge tubes or lamps > Electron guns

Of 8 combined children, 0 exist in both systems.

8 codes are CPC-only extensions.

Child Classifications

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H01J 3/021 +1 CPC CPC only CPC only
H01J 3/023 CPC only CPC only
H01J 3/024 CPC only CPC only
H01J 3/025 CPC only CPC only
H01J 3/026 CPC only CPC only
H01J 3/027 CPC only CPC only
H01J 3/028 CPC only CPC only
H01J 3/029 CPC only CPC only