1557447

Information

• Patent Grant
• 1557447

• References
• Source

• Patent Number

  1,557,447

• Date Filed

  Not available

• Date Issued

  Tuesday, October 13, 1925
  99 years ago

• CPC

  • G04B5/24 - Protecting means preventing overwinding

• US Classifications

  • 185 - Motors: spring, weight, or animal powered
  • 968 - Horology