3821620

Information

• Patent Grant
• 3821620

• References
• Source

• Patent Number

  3,821,620

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • H02K17/34 - Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter
  • H02P25/04 - Single phase motors

• US Classifications

  • 318 - Electricity: motive power systems
  • 310 - Electrical generator or motor structure