1379881

Information

• Patent Grant
• 1379881

• References
• Source

• Patent Number

  1,379,881

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1921
  103 years ago

• CPC

  • H05B31/305 - Ignition devices
  • H05B31/0039 - Projectors, the construction of which depends upon the presence of the arc

• US Classifications

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