3072820

Information

• Patent Grant
• 3072820

• References
• Source

• Patent Number

  3,072,820

• Date Filed

  Not available

• Date Issued

  Tuesday, January 8, 1963
  61 years ago

• CPC

  • H01J23/05 - having a cylindrical emissive surface
  • H01J25/56 - with interdigital arrangements of anodes

• US Classifications

  • 315 - Electric lamp and discharge devices: systems