3543077

Information

• Patent Grant
• 3543077

• References
• Source

• Patent Number

  3,543,077

• Date Filed

  Not available

• Date Issued

  Tuesday, November 24, 1970
  54 years ago

• CPC

  • H01J17/40 - with one cathode and one anode
  • G01N21/67 - using electric arcs or discharges
  • H01J2893/0064 - Tubes with cold main electrodes (including cold cathodes)

• US Classifications

  • 356 - Optics: measuring and testing
  • 313 - Electric lamp and discharge devices