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PCE
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DIFF Subgroup
H01J 23/40

to or from the interaction circuit

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Details of transit-time tubes of the types covered by group > Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy > to or from the interaction circuit

CPC:

Details of transit-time tubes of the types covered by group H01J25/00 > Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy > to or from the interaction circuit

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

3 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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  • H01J 23/42 the interaction circuit being a helix or a helix-derived slow-wave structure (H01J23/44 - H01J23/48 take precedence) since 1985 IPC+CPC Available in IPC and CPC
  • H01J 23/44 Rod-type coupling devices (H01J23/46, H01J23/48, H01J23/54 take precedence) since 1985 IPC+CPC Available in IPC and CPC
  • H01J 23/46 Loop coupling devices since 1985 IPC+CPC Available in IPC and CPC