2217869

Information

• Patent Grant
• 2217869

• References
• Source

• Patent Number

  2,217,869

• Date Filed

  Not available

• Date Issued

  Tuesday, October 15, 1940
  85 years ago

• CPC

  • H01J25/52 - with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
  • H01J21/18 - having magnetic control means having both magnetic and electro-static control means
  • H03C1/34 - by means of light-sensitive element

• US Classifications

  • 332 - Modulators
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems
  • 331 - Oscillators