2190668

Information

• Patent Grant
• 2190668

• References
• Source

• Patent Number

  2,190,668

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1940
  84 years ago

• CPC

  • H01J25/74 - Tubes specially designed to act as transit-time diode oscillators
  • H03B9/01 - using discharge tubes

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 313 - Electric lamp and discharge devices
  • 331 - Oscillators
  • 332 - Modulators
  • 333 - Wave transmission lines and networks