DIFF Subgroup
H04Q 3/60 for connecting to satellites or concentrators which connect one or more exchange lines with a group of local lines
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Selecting arrangements > Arrangements providing connection between main exchange and sub-exchange or satellite > for connecting to satellites or concentrators which connect one or more exchange lines with a group of local lines
CPC:
Selecting arrangements (H04Q5/00 - H04Q11/00 take precedence) > Arrangements providing connection between main exchange and sub-exchange or satellite > for connecting to satellites or concentrators which connect one or more exchange lines with a group of local lines
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open