H01J 23/50 the interaction circuit being a helix or derived from a helix (H01J23/52 takes precedence)
Introduced: January 1985
Title
Titles differ between systems:
IPC: the interaction circuit being a helix or derived from a helix
CPC: the interaction circuit being a helix or derived from a helix (H01J23/52 takes 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 > for linking interaction circuit with coaxial lines; Devices of the coupled helices type > the interaction circuit being a helix or derived from a helix
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 > for linking interaction circuit with coaxial lines; Devices of the coupled helices type (H01J23/46 takes precedence) > the interaction circuit being a helix or derived from a helix (H01J23/52 takes precedence)
No child classifications to compare. This is a leaf node in both IPC and CPC.