3686431

Information

• Patent Grant
• 3686431

• References
• Source

• Patent Number

  3,686,431

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1972
  53 years ago

• CPC

  • H04H20/88 - Stereophonic broadcast systems
  • H04J1/20 - in which at least one carrier is angle-modulated
  • H04N5/38 - Transmitter circuitry
  • H04N7/06 - Systems for the simultaneous transmission of one television signal

• US Classifications

  • 348 - Television
  • 332 - Modulators
  • 381 - Electrical audio signal processing systems and devices
  • 455 - Telecommunications