3530457

Information

• Patent Grant
• 3530457

• References
• Source

• Patent Number

  3,530,457

• Date Filed

  Not available

• Date Issued

  Tuesday, September 22, 1970
  54 years ago

• CPC

  • H04L17/18 - Code selection mechanisms
  • G06F7/40 - using contact- making devices

• US Classifications

  • 340 - Communications: electrical