1930829

Information

• Patent Grant
• 1930829

• References
• Source

• Patent Number

  1,930,829

• Date Filed

  Not available

• Date Issued

  Tuesday, October 17, 1933
  91 years ago

• CPC

  • H01J13/48 - Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
  • H01J2893/0058 - Grids Auxiliary internal or external electrodes

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 250 - Radiant energy
  • 315 - Electric lamp and discharge devices: systems