3427505

Information

• Patent Grant
• 3427505

• References
• Source

• Patent Number

  3,427,505

• Date Filed

  Not available

• Date Issued

  Tuesday, February 11, 1969
  55 years ago

• CPC

  • H02H3/105 - responsive to excess current and fault current to earth
  • H01H83/226 - with differential transformer
  • H02H3/347 - using summation current transformers
  • H01H71/28 - with windings acting in conjunction

• US Classifications

  • 361 - Electricity: electrical systems and devices