3487253

Information

• Patent Grant
• 3487253

• References
• Source

• Patent Number

  3,487,253

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1969
  54 years ago

• CPC

  • H01J19/38 - Control electrodes
  • H01J2893/0016 - Planar grids

• US Classifications

  • 313 - Electric lamp and discharge devices