1690550

Information

• Patent Grant
• 1690550

• References
• Source

• Patent Number

  1,690,550

• Date Filed

  Not available

• Date Issued

  Tuesday, November 6, 1928
  96 years ago

• CPC

  • H05B31/0051 - Bypassing circuit devices for arc lamps

• US Classifications

  • 314 - Electric lamp and discharge devices: consumable electrodes