H01J 23/42 the interaction circuit being a helix or a helix-derived slow-wave structure (H01J23/44 - H01J23/48 take precedence)
Introduced: January 1985
Title
Titles differ between systems:
IPC: the interaction circuit being a helix or a helix-derived slow-wave structure
CPC: the interaction circuit being a helix or a helix-derived slow-wave structure (H01J23/44 - H01J23/48 take precedence)
Full Title
Full titles differ between systems:
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 > the interaction circuit being a helix or a helix-derived slow-wave structure
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 > the interaction circuit being a helix or a helix-derived slow-wave structure (H01J23/44 - H01J23/48 take precedence)
No child classifications to compare. This is a leaf node in both IPC and CPC.