1558423

Information

• Patent Grant
• 1558423

• References
• Source

• Patent Number

  1,558,423

• Date Filed

  Not available

• Date Issued

  Tuesday, October 20, 1925
  99 years ago

• CPC

  • H05B31/0045 - of individual lamps; Associated impedances

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 313 - Electric lamp and discharge devices
  • 314 - Electric lamp and discharge devices: consumable electrodes