3840881

Information

• Patent Grant
• 3840881

• References
• Source

• Patent Number

  3,840,881

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1974
  50 years ago

• CPC

  • H01J9/2274 - Light sources particularly adapted therefor

• US Classifications

  • 396 - Photography
  • 313 - Electric lamp and discharge devices