3673330

Information

• Patent Grant
• 3673330

• References
• Source

• Patent Number

  3,673,330

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1972
  52 years ago

• CPC

  • H04Q11/02 - for frequency-division multiplexing
  • H01J1/14 - characterised by the material
  • H04Q5/24 - for two-party-line systems

• US Classifications

  • 370 - Multiplex communications
  • 379 - Telephonic communications