1933976

Information

• Patent Grant
• 1933976

• References
• Source

• Patent Number

  1,933,976

• Date Filed

  Not available

• Date Issued

  Tuesday, November 7, 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

  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 178 - Telegraphy
  • 315 - Electric lamp and discharge devices: systems
  • 361 - Electricity: electrical systems and devices