1437421

Information

• Patent Grant
• 1437421

• References
• Source

• Patent Number

  1,437,421

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1922
  102 years ago

• CPC

  • H02K7/1026 - using stray fields

• US Classifications

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