3801860

Information

• Patent Grant
• 3801860

• References
• Source

• Patent Number

  3,801,860

• Date Filed

  Not available

• Date Issued

  Tuesday, April 2, 1974
  50 years ago

• CPC

  • H01K1/60 - Means structurally associated with the lamp for indicating defects or previous use

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 340 - Communications: electrical