3440379

Information

• Patent Grant
• 3440379

• References
• Source

• Patent Number

  3,440,379

• Date Filed

  Not available

• Date Issued

  Tuesday, April 22, 1969
  55 years ago

• CPC

  • H01H33/168 - the impedance being inserted both while closing and while opening the switch
  • H01H33/86 - the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve

• US Classifications

  • 218 - High-voltage switches with arc preventing or extinguishing devices