2781433

Information

• Patent Grant
• 2781433

• References
• Source

• Patent Number

  2,781,433

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1957
  67 years ago

• CPC

  • H01H71/142 - actuated due to change of magnetic permeability

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 361 - Electricity: electrical systems and devices