2214642

Information

• Patent Grant
• 2214642

• References
• Source

• Patent Number

  2,214,642

• Date Filed

  Not available

• Date Issued

  Tuesday, September 10, 1940
  85 years ago

• CPC

  • H04L5/22 - using time-division multiplexing
  • H04L19/00 - Apparatus or local circuits for step-by-step systems

• US Classifications

  • 370 - Multiplex communications