2225689

Information

• Patent Grant
• 2225689

• References
• Source

• Patent Number

  2,225,689

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1940
  84 years ago

• CPC

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

• US Classifications

  • 330 - Amplifiers
  • 313 - Electric lamp and discharge devices
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems