3868490

Information

• Patent Grant
• 3868490

• References
• Source

• Patent Number

  3,868,490

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1975
  49 years ago

• CPC

  • G04B17/34 - for fastening the hairspring onto the balance
  • G04D1/047 - on the coil roll

• US Classifications

  • 219 - Electric heating
  • 368 - Horology: time measuring systems or devices
  • 968 - Horology