3621650

Information

• Patent Grant
• 3621650

• References
• Source

• Patent Number

  3,621,650

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1971
  53 years ago

• CPC

  • G04B1/185 - Friction clutch between spring and spring cylinder

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology