3471646

Information

• Patent Grant
• 3471646

• References
• Source

• Patent Number

  3,471,646

• Date Filed

  Not available

• Date Issued

  Tuesday, October 7, 1969
  55 years ago

• CPC

  • H04J3/00 - Time-division multiplex systems
  • H04B14/002 - characterised by the use of a carrier modulation
  • H04B14/02 - characterised by the use of pulse modulation
  • H04B14/062 - using delta modulation or one-bit differential modulation [1DPCM]
  • H04J4/00 - Combined time-division and frequency-division multiplex systems

• US Classifications

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