645774

Information

• Patent Grant
• 645774

• References
• Source

• Patent Number

  645,774

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1900
  125 years ago

• CPC

  • H02M3/40 - wherein the parts are rotating and collectors co-operate with brushes or rollers

• US Classifications

  • 363 - Electric power conversion systems