3164740

Information

• Patent Grant
• 3164740

• References
• Source

• Patent Number

  3,164,740

• Date Filed

  Not available

• Date Issued

  Tuesday, January 5, 1965
  60 years ago

• CPC

  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J2893/0023 - carbonising and other surface treatments

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 252 - Compositions
  • 445 - Electric lamp or space discharge component or device manufacturing