TREA

Arrangements for indicating calls or supervising connections for calling or clearing

Follow

Industry

  • CPC
  • H04M5/04
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M5/00Manual exchanges

Current Industry

H04M5/04Arrangements for indicating calls or supervising connections for calling or clearing
Industries