2814574

Information

• Patent Grant
• 2814574

• References
• Source

• Patent Number

  2,814,574

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1957
  67 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

  • 428 - Stock material or miscellaneous articles
  • 106 - Compositions: coating or plastic
  • 427 - Coating processes