3649868

Information

• Patent Grant
• 3649868

• References
• Source

• Patent Number

  3,649,868

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  52 years ago

• CPC

  • H01J3/021 - Electron guns using a field emission, photo emission, or secondary emission electron source
  • H01J3/023 - Electron guns using electron multiplication
  • H01J2201/342 - Cathodes

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 250 - Radiant energy
  • 313 - Electric lamp and discharge devices