1981040

Information

• Patent Grant
• 1981040

• References
• Source

• Patent Number

  1,981,040

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1934
  90 years ago

• CPC

  • H02P7/2825 - whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
  • H02P9/42 - to obtain desired frequency without varying speed of the generator

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 363 - Electric power conversion systems