3632485

Information

• Patent Grant
• 3632485

• References
• Source

• Patent Number

  3,632,485

• Date Filed

  Not available

• Date Issued

  Tuesday, January 4, 1972
  53 years ago

• CPC

  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J19/30 - characterised by the material
  • H01J2893/002 - chemical
  • H01J2893/0024 - Planar grids

• US Classifications

  • 205 - Electrolysis: processes, compositions used therein, and methods of preparing the compositions
  • 313 - Electric lamp and discharge devices