1178511

Information

• Patent Grant
• 1178511

• References
• Source

• Patent Number

  1,178,511

• Date Filed

  Not available

• Date Issued

  Tuesday, April 11, 1916
  108 years ago

• CPC

  • H04M1/745 - Protection devices or circuits for voltages surges on the line
  • H02H7/24 - for spark-gap arresters

• US Classifications

  • 361 - Electricity: electrical systems and devices