3840834

Information

• Patent Grant
• 3840834

• References
• Source

• Patent Number

  3,840,834

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1974
  50 years ago

• CPC

  • G01R19/16571 - comparing AC or DC current with one threshold
  • H01H61/013 - Heating arrangements for operating relays
  • H01H71/164 - Heating elements

• US Classifications

  • 337 - Electricity: electrothermally or thermally actuated switches
  • 361 - Electricity: electrical systems and devices