2490569

Information

• Patent Grant
• 2490569

• References
• Source

• Patent Number

  2,490,569

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1949
  75 years ago

• CPC

  • H03G1/0011 - the device being at least one of the amplifying tubes of the amplifier

• US Classifications

  • 330 - Amplifiers