913209

Information

• Patent Grant
• 913209

• References
• Source

• Patent Number

  913,209

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1909
  116 years ago

• CPC

  • H05B31/0093 - with a threaded rod

• US Classifications

  • 314 - Electric lamp and discharge devices: consumable electrodes