1381543

Information

• Patent Grant
• 1381543

• References
• Source

• Patent Number

  1,381,543

• Date Filed

  Not available

• Date Issued

  Tuesday, June 14, 1921
  103 years ago

• CPC

  • G04C21/22 - put into action by the arbor of a mechanical alarm work
  • Y10T74/118 - Winding knob trip [e.g., alarm mechanism]

• US Classifications

  • 074 - Machine element or mechanism
  • 968 - Horology