3691464

Information

• Patent Grant
• 3691464

• References
• Source

• Patent Number

  3,691,464

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  52 years ago

• CPC

  • H04W88/188 - using frequency address codes
  • H04L5/26 - combined with the use of different frequencies
  • H04L27/10 - Frequency-modulated carrier systems
  • H04L27/103 - Chirp modulation
  • H04L27/26 - Systems using multi-frequency codes

• US Classifications

  • 375 - Pulse or digital communications
  • 370 - Multiplex communications
  • 455 - Telecommunications