612556

Information

• Patent Grant
• 612556

• References
• Source

• Patent Number

  612,556

• Date Filed

  Not available

• Date Issued

  Tuesday, October 18, 1898
  126 years ago

• CPC

  • H05B31/0006 - with superimposed electrodes

• US Classifications

  • 314 - Electric lamp and discharge devices: consumable electrodes