3631399

Information

• Patent Grant
• 3631399

• References
• Source

• Patent Number

  3,631,399

• Date Filed

  Not available

• Date Issued

  Tuesday, December 28, 1971
  53 years ago

• CPC

  • H04B5/0012 - using capacitive coupling
  • G08C19/26 - by varying pulse repetition frequency
  • H04B14/08 - characterised by the use of a sub-carrier

• US Classifications

  • 375 - Pulse or digital communications
  • 340 - Communications: electrical