2191074

Information

• Patent Grant
• 2191074

• References
• Source

• Patent Number

  2,191,074

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1940
  84 years ago

• CPC

  • H02K21/025 - by varying the thickness of the air gap between field and armature

• US Classifications

  • 310 - Electrical generator or motor structure