1548812

Information

• Patent Grant
• 1548812

• References
• Source

• Patent Number

  1,548,812

• Date Filed

  Not available

• Date Issued

  Tuesday, August 4, 1925
  99 years ago

• CPC

  • H05B31/0027 - with special gasfilling

• US Classifications

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