3481138

Information

• Patent Grant
• 3481138

• References
• Source

• Patent Number

  3,481,138

• Date Filed

  Not available

• Date Issued

  Tuesday, December 2, 1969
  55 years ago

• CPC

  • G04C3/068 - provided with automatic control
  • G04C3/04 - wherein movement is regulated by a balance
  • G04C3/042 - using mechanical coupling
  • G04C3/067 - Driving circuits with distinct detecting and driving coils

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 318 - Electricity: motive power systems
  • 968 - Horology