3725728

Information

• Patent Grant
• 3725728

• References
• Source

• Patent Number

  3,725,728

• Date Filed

  Not available

• Date Issued

  Tuesday, April 3, 1973
  51 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