3316438

Information

• Patent Grant
• 3316438

• References
• Source

• Patent Number

  3,316,438

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1967
  58 years ago

• CPC

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

• US Classifications

  • 313 - Electric lamp and discharge devices