3686683

Information

• Patent Grant
• 3686683

• References
• Source

• Patent Number

  3,686,683

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1972
  52 years ago

• CPC

  • H01J49/18 - using spark ionisation
  • H05B41/3921 - with possibility of light intensity variations
  • H05B41/40 - discontinuously

• US Classifications

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