3551734

Information

• Patent Grant
• 3551734

• References
• Source

• Patent Number

  3,551,734

• Date Filed

  Not available

• Date Issued

  Tuesday, December 29, 1970
  54 years ago

• CPC

  • H01J9/233 - Manufacture of photo-electric screens or charge-storage screens
  • H01J29/46 - Arrangements of electrodes and associated parts for generating or controlling the ray or beam
  • H01J29/50 - Two or more guns in a single vacuum space
  • H01J37/06 - Electron sources Electron guns
  • H01J37/141 - Electromagnetic lenses
  • H01J37/21 - Means for adjusting the focus
  • H01J37/30 - Electron-beam or ion-beam tubes for localised treatment of objects
  • H01J2229/505 - Arrays

• US Classifications

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