1451896

Information

• Patent Grant
• 1451896

• References
• Source

• Patent Number

  1,451,896

• Date Filed

  Not available

• Date Issued

  Tuesday, April 17, 1923
  102 years ago

• CPC

  • H04M5/06 - affording automatic call distribution
  • H04M9/00 - Interconnection arrangements not involving centralised switching

• US Classifications

  • 379 - Telephonic communications