137437

Information

• Patent Grant
• 137437

• References
• Source

• Patent Number

  137,437

• Date Filed

  Not available

• Date Issued

  Tuesday, April 1, 1873
  151 years ago

• CPC

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

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 185 - Motors: spring, weight, or animal powered
  • 968 - Horology