2266621

Information

• Patent Grant
• 2266621

• References
• Source

• Patent Number

  2,266,621

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1941
  83 years ago

• CPC

  • H01J31/34 - having regulation of screen potential at cathode potential

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 313 - Electric lamp and discharge devices