3489969

Information

• Patent Grant
• 3489969

• References
• Source

• Patent Number

  3,489,969

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1970
  55 years ago

• CPC

  • H02P1/426 - by using a specially adapted frequency converter

• US Classifications

  • 318 - Electricity: motive power systems