3256458

Information

• Patent Grant
• 3256458

• References
• Source

• Patent Number

  3,256,458

• Date Filed

  Not available

• Date Issued

  Tuesday, June 14, 1966
  58 years ago

• CPC

  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J19/28 - Non-electron-emitting electrodes Screens
  • H01J2893/0011 - Non-emitting electrodes
  • H01J2893/0013 - Sealed electrodes
  • H01J2893/0023 - carbonising and other surface treatments

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 257 - Active solid-state devices