3757220

Information

• Patent Grant
• 3757220

• References
• Source

• Patent Number

  3,757,220

• Date Filed

  Not available

• Date Issued

  Tuesday, September 4, 1973
  52 years ago

• CPC

  • H04B5/0093 - with one coil at each side
  • G09B5/12 - different stations being capable of presenting different information simultaneously
  • H03D3/04 - by counting or integrating cycles of oscillations
  • H03G11/002 - without controlling loop
  • H04B1/38 - Transceivers
  • H04J1/20 - in which at least one carrier is angle-modulated

• US Classifications

  • 370 - Multiplex communications
  • 434 - Education and demonstration
  • 455 - Telecommunications