1352117

Information

• Patent Grant
• 1352117

• References
• Source

• Patent Number

  1,352,117

• Date Filed

  Not available

• Date Issued

  Tuesday, September 7, 1920
  104 years ago

• CPC

  • H02H3/205 - using a spark-gap as detector
  • H01T1/14 - Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure

• US Classifications

  • 337 - Electricity: electrothermally or thermally actuated switches
  • 313 - Electric lamp and discharge devices