2840671

Information

• Patent Grant
• 2840671

• References
• Source

• Patent Number

  2,840,671

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1958
  66 years ago

• CPC

  • H01H33/168 - the impedance being inserted both while closing and while opening the switch

• US Classifications

  • 218 - High-voltage switches with arc preventing or extinguishing devices
  • 200 - Electricity: circuit makers and breakers