2389004

Information

• Patent Grant
• 2389004

• References
• Source

• Patent Number

  2,389,004

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1945
  79 years ago

• CPC

  • H03B7/04 - active element being vacuum tube

• US Classifications

  • 331 - Oscillators
  • 375 - Pulse or digital communications