1640290

Information

• Patent Grant
• 1640290

• References
• Source

• Patent Number

  1,640,290

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1927
  97 years ago

• CPC

  • H02K21/32 - having a horse-shoe magnet

• US Classifications

  • 310 - Electrical generator or motor structure