514904

Information

• Patent Grant
• 514904

• References
• Source

• Patent Number

  514,904

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1894
  131 years ago

• CPC

  • H02K19/32 - for pole-changing

• US Classifications

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