2137265

Information

• Patent Grant
• 2137265

• References
• Source

• Patent Number

  2,137,265

• Date Filed

  Not available

• Date Issued

  Tuesday, November 22, 1938
  85 years ago

• CPC

  • H03F1/13 - in discharge tube amplifiers

• US Classifications

  • 330 - Amplifiers
  • 331 - Oscillators