3587077

Information

• Patent Grant
• 3587077

• References
• Source

• Patent Number

  3,587,077

• Date Filed

  Not available

• Date Issued

  Tuesday, June 22, 1971
  53 years ago

• CPC

  • H04Q9/12 - using combinations of frequencies
  • H04H60/43 - for identifying broadcast channels
  • H04H60/76 - Arrangements characterised by transmission systems other than for broadcast

• US Classifications

  • 340 - Communications: electrical
  • 346 - Recorders
  • 455 - Telecommunications