3158694

Information

• Patent Grant
• 3158694

• References
• Source

• Patent Number

  3,158,694

• Date Filed

  Not available

• Date Issued

  Tuesday, November 24, 1964
  60 years ago

• CPC

  • H04M9/00 - Interconnection arrangements not involving centralised switching
  • H04M3/64 - Arrangements for signalling the number or class of the calling line to the operator
  • H04Q3/00 - Selecting arrangements

• US Classifications

  • 379 - Telephonic communications