3670223

Information

• Patent Grant
• 3670223

• References
• Source

• Patent Number

  3,670,223

• Date Filed

  Not available

• Date Issued

  Tuesday, June 13, 1972
  52 years ago

• CPC

  • H02K33/08 - with dc energisation superimposed on ac energisation

• US Classifications

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