3859475

Information

• Patent Grant
• 3859475

• References
• Source

• Patent Number

  3,859,475

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1975
  50 years ago

• CPC

  • H04W88/188 - using frequency address codes

• US Classifications

  • 455 - Telecommunications
  • 340 - Communications: electrical