3909652

Information

• Patent Grant
• 3909652

• References
• Source

• Patent Number

  3,909,652

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1975
  49 years ago

• CPC

  • G01N21/67 - using electric arcs or discharges
  • H01J17/066 - Cold cathodes
  • H01J2893/0066 - Construction, material, support, protection and temperature regulation of electrodes Electrode cups

• US Classifications

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