2987423

Information

• Patent Grant
• 2987423

• References
• Source

• Patent Number

  2,987,423

• Date Filed

  Not available

• Date Issued

  Tuesday, June 6, 1961
  64 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

  • 427 - Coating processes
  • 118 - Coating apparatus