448191

Information

• Patent Grant
• 448191

• References
• Source

• Patent Number

  448,191

• Date Filed

  Not available

• Date Issued

  Tuesday, March 10, 1891
  133 years ago

• CPC

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

• US Classifications

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