1400525

Information

• Patent Grant
• 1400525

• References
• Source

• Patent Number

  1,400,525

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1921
  102 years ago

• CPC

  • H01T13/26 - for adjusting spark gap otherwise than by bending of electrode

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 174 - Electricity: conductors and insulators