DIFF Subgroup
H04M 1/52 Arrangements wherein a dial or the like is mechanically coupled to a line selector
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Substation equipment, e.g. for use by subscribers > Devices for calling a subscriber > Arrangements wherein a dial or the like is mechanically coupled to a line selector
CPC:
Substation equipment, e.g. for use by subscribers (subscriber services or facilities provided at exchanges H04M3/00; prepayment telephone coin boxes H04M17/00; current supply arrangements H04M19/08) > Devices for calling a subscriber (H04M1/66 takes precedence) > Arrangements wherein a dial or the like is mechanically coupled to a line selector
No child classifications to compare. This is a leaf node in both IPC and CPC.