522986

Information

• Patent Grant
• 522986

• References
• Source

• Patent Number

  522,986

• Date Filed

  Not available

• Date Issued

  Tuesday, July 17, 1894
  130 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
  • 178 - Telegraphy
  • 307 - Electrical transmission or interconnection systems