Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Subgroup
H04Q 5/02

with direct connection for all subscribers, i.e. party-line systems (H04Q5/24 takes precedence)

Full Title

Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange > with direct connection for all subscribers, i.e. party-line systems (H04Q5/24 takes precedence)

4 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • H04Q 5/04 Signalling by currents in one or other or both line wires or additional wires
  • H04Q 5/06 Signalling by amplitude or polarity of DC