3849685

Information

• Patent Grant
• 3849685

• References
• Source

• Patent Number

  3,849,685

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1974
  50 years ago

• CPC

  • G08B17/113 - Constructional details
  • H01J41/08 - with ionisation by means of radioactive substances

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 250 - Radiant energy