2193600

Information

• Patent Grant
• 2193600

• References
• Source

• Patent Number

  2,193,600

• Date Filed

  Not available

• Date Issued

  Tuesday, March 12, 1940
  85 years ago

• CPC

  • H01J19/30 - characterised by the material
  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J19/38 - Control electrodes
  • H01J2893/0015 - Non-sealed electrodes
  • H01J2893/0021 - carbon

• US Classifications

  • 313 - Electric lamp and discharge devices