3681638

Information

• Patent Grant
• 3681638

• References
• Source

• Patent Number

  3,681,638

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1972
  53 years ago

• CPC

  • H01J29/10 - Screens on or from which an image or pattern is formed, picked up, converted or stored
  • H01J9/233 - Manufacture of photo-electric screens or charge-storage screens
  • H01J31/122 - Direct viewing storage tubes without storage grid

• US Classifications

  • 313 - Electric lamp and discharge devices