3420954

Information

• Patent Grant
• 3420954

• References
• Source

• Patent Number

  3,420,954

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1969
  56 years ago

• CPC

  • H03F3/02 - with tubes only
  • H03D1/2218 - using diodes for the decoding
  • H04S1/00 - Two-channel systems

• US Classifications

  • 381 - Electrical audio signal processing systems and devices
  • 330 - Amplifiers