1658972

Information

• Patent Grant
• 1658972

• References
• Source

• Patent Number

  1,658,972

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1928
  97 years ago

• CPC

  • H02P7/34 - using Ward-Leonard arrangements
  • Y10S388/928 - Which controls position of commutator brushes

• US Classifications

  • 388 - Electricity: motor control systems
  • 318 - Electricity: motive power systems
  • 322 - Electricity: single generator systems