3538278

Information

• Patent Grant
• 3538278

• References
• Source

• Patent Number

  3,538,278

• Date Filed

  Not available

• Date Issued

  Tuesday, November 3, 1970
  54 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
  • 361 - Electricity: electrical systems and devices