3472020

Information

• Patent Grant
• 3472020

• References
• Source

• Patent Number

  3,472,020

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1969
  55 years ago

• CPC

  • G04C3/045 - with constant impulses
  • G04C3/042 - using mechanical coupling

• US Classifications

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