3439509

Information

• Patent Grant
• 3439509

• References
• Source

• Patent Number

  3,439,509

• Date Filed

  Not available

• Date Issued

  Tuesday, April 22, 1969
  55 years ago

• CPC

  • H02M7/1623 - with control circuit
  • H02H7/127 - having auxiliary control electrode to which blocking control voltages or currents are applied in case of emergency

• US Classifications

  • 062 - Refrigeration