3614323

Information

• Patent Grant
• 3614323

• References
• Source

• Patent Number

  3,614,323

• Date Filed

  Not available

• Date Issued

  Tuesday, October 19, 1971
  53 years ago

• CPC

  • H04Q11/02 - for frequency-division multiplexing
  • H04M7/16 - in systems employing carrier frequencies
  • H04Q5/245 - Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal

• US Classifications

  • 380 - Cryptography
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems