1399005

Information

• Patent Grant
• 1399005

• References
• Source

• Patent Number

  1,399,005

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1921
  102 years ago

• CPC

  • H01J17/00 - Gas-filled discharge tubes with solid cathode
  • H01T9/00 - Spark gaps specially adapted for generating oscillations
  • H01J2893/0059 - Arc discharge tubes

• US Classifications

  • 313 - Electric lamp and discharge devices