3694260

Information

• Patent Grant
• 3694260

• References
• Source

• Patent Number

  3,694,260

• Date Filed

  Not available

• Date Issued

  Tuesday, September 26, 1972
  52 years ago

• CPC

  • H01J21/36 - Tubes with flat electrodes
  • H01J1/20 - Cathodes heated indirectly by an electric current Cathodes heated by electron or ion bombardment
  • H01J1/28 - Dispenser-type cathodes
  • H01J9/04 - of thermionic cathodes

• US Classifications

  • 427 - Coating processes
  • 313 - Electric lamp and discharge devices