1521361

Information

• Patent Grant
• 1521361

• References
• Source

• Patent Number

  1,521,361

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1924
  100 years ago

• CPC

  • H05B31/0093 - with a threaded rod

• US Classifications

  • 314 - Electric lamp and discharge devices: consumable electrodes
  • 219 - Electric heating