3529203

Information

• Patent Grant
• 3529203

• References
• Source

• Patent Number

  3,529,203

• Date Filed

  Not available

• Date Issued

  Tuesday, September 15, 1970
  55 years ago

• CPC

  • H01J23/05 - having a cylindrical emissive surface
  • H01J1/28 - Dispenser-type cathodes
  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J2893/0023 - carbonising and other surface treatments
  • Y10T428/26 - Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 427 - Coating processes
  • 428 - Stock material or miscellaneous articles