2977522

Information

• Patent Grant
• 2977522

• References
• Source

• Patent Number

  2,977,522

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1961
  63 years ago

• CPC

  • H02P7/265 - whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
  • H02P7/293 - using phase control

• US Classifications

  • 318 - Electricity: motive power systems