1344938

Information

• Patent Grant
• 1344938

• References
• Source

• Patent Number

  1,344,938

• Date Filed

  Not available

• Date Issued

  Tuesday, June 29, 1920
  105 years ago

• CPC

  • H05B31/0066 - Saving arrangements; Ventilation devices

• US Classifications

  • 362 - Illumination
  • 314 - Electric lamp and discharge devices: consumable electrodes