1398491

Information

• Patent Grant
• 1398491

• References
• Source

• Patent Number

  1,398,491

• Date Filed

  Not available

• Date Issued

  Tuesday, November 29, 1921
  103 years ago

• CPC

  • H02K21/325 - with the axis of the rotating armature perpendicular to the plane of the magnet

• US Classifications

  • 123 - Internal-combustion engines
  • 200 - Electricity: circuit makers and breakers
  • 324 - Electricity: measuring and testing