3326648

Information

• Patent Grant
• 3326648

• References
• Source

• Patent Number

  3,326,648

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1967
  58 years ago

• CPC

  • H01J9/04 - of thermionic cathodes
  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J2893/0023 - carbonising and other surface treatments
  • Y10S428/927 - Decorative informative
  • Y10S428/929 - Electrical contact feature
  • Y10S428/936 - Chemical deposition
  • Y10T428/12681 - Ga-, In-, Tl- or Group VA metal-base component
  • Y10T428/1275 - Next to Group VIII or IB metal-base component
  • Y10T428/12778 - Alternative base metals from diverse categories
  • Y10T428/12944 - Ni-base component

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 148 - Metal treatment
  • 252 - Compositions
  • 420 - Alloys or metallic compositions
  • 427 - Coating processes