644381

Information

• Patent Grant
• 644381

• References
• Source

• Patent Number

  644,381

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1900
  125 years ago

• CPC

  • G04B3/06 - Keys or the like with means preventing overwinding
  • G04B27/04 - with clutch wheel

• US Classifications

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