3465400

Information

• Patent Grant
• 3465400

• References
• Source

• Patent Number

  3,465,400

• Date Filed

  Not available

• Date Issued

  Tuesday, September 9, 1969
  55 years ago

• CPC

  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J9/04 - of thermionic cathodes
  • H01J19/38 - Control electrodes
  • H01J2893/0017 - Cylindrical, helical or annular grids
  • H01J2893/0022 - Manufacture

• US Classifications

  • 445 - Electric lamp or space discharge component or device manufacturing
  • 140 - Wireworking
  • 313 - Electric lamp and discharge devices