2940873

Information

• Patent Grant
• 2940873

• References
• Source

• Patent Number

  2,940,873

• Date Filed

  Not available

• Date Issued

  Tuesday, June 14, 1960
  65 years ago

• CPC

  • H01J29/02 - Electrodes Screens Mounting, supporting, spacing or insulating thereof
  • C23C14/046 - Coating cavities or hollow spaces
  • H01J9/14 - of non-emitting electrodes
  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J2893/0023 - carbonising and other surface treatments
  • Y10S55/05 - Methods of making filter

• US Classifications

  • 427 - Coating processes
  • 055 - Gas separation
  • 118 - Coating apparatus
  • 392 - Electric resistance heating devices