3489870

Information

• Patent Grant
• 3489870

• References
• Source

• Patent Number

  3,489,870

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1970
  55 years ago

• CPC

  • H01H33/164 - the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode
  • H01H9/46 - using arcing-horn

• US Classifications

  • 218 - High-voltage switches with arc preventing or extinguishing devices
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 361 - Electricity: electrical systems and devices