3644790

Information

• Patent Grant
• 3644790

• References
• Source

• Patent Number

  3,644,790

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  52 years ago

• CPC

  • H02H11/005 - in case of too low isolation resistance, too high load, short-circuit; earth fault
  • H02H7/224 - Anti-pump circuits

• US Classifications

  • 361 - Electricity: electrical systems and devices