3715723

Information

• Patent Grant
• 3715723

• References
• Source

• Patent Number

  3,715,723

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1973
  51 years ago

• CPC

  • H04Q9/12 - using combinations of frequencies

• US Classifications

  • 714 - Error detection/correction and fault detection/recovery