1377405

Information

• Patent Grant
• 1377405

• References
• Source

• Patent Number

  1,377,405

• Date Filed

  Not available

• Date Issued

  Tuesday, May 10, 1921
  103 years ago

• CPC

  • H03F1/36 - in discharge-tube amplifiers
  • H03F1/40 - in discharge-tube amplifiers

• US Classifications

  • 330 - Amplifiers