620990

Information

• Patent Grant
• 620990

• References
• Source

• Patent Number

  620,990

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1899
  125 years ago

• CPC

  • H02K47/26 - operating as under- or over-synchronously running asynchronous induction machines

• US Classifications

  • 363 - Electric power conversion systems