1522216

Information

• Patent Grant
• 1522216

• References
• Source

• Patent Number

  1,522,216

• Date Filed

  Not available

• Date Issued

  Tuesday, January 6, 1925
  100 years ago

• CPC

  • G04C15/0081 - Automatic stabilisation of net frequency with regard to time
  • Y10S388/925 - including contacts which open and close motor circuit

• US Classifications

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