1938411

Information

• Patent Grant
• 1938411

• References
• Source

• Patent Number

  1,938,411

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1933
  91 years ago

• CPC

  • H02P9/42 - to obtain desired frequency without varying speed of the generator
  • G04C15/0081 - Automatic stabilisation of net frequency with regard to time

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 322 - Electricity: single generator systems
  • 368 - Horology: time measuring systems or devices
  • 388 - Electricity: motor control systems
  • 968 - Horology