2321291

Information

• Patent Grant
• 2321291

• References
• Source

• Patent Number

  2,321,291

• Date Filed

  Not available

• Date Issued

  Tuesday, June 8, 1943
  82 years ago

• CPC

  • H04N5/60 - for the sound signals
  • H03F1/50 - with tubes only
  • H03H7/0176 - witout magnetic core

• US Classifications

  • 330 - Amplifiers
  • 348 - Television