1311501

Information

• Patent Grant
• 1311501

• References
• Source

• Patent Number

  1,311,501

• Date Filed

  Not available

• Date Issued

  Tuesday, July 29, 1919
  105 years ago

• CPC

  • G04B18/06 - by setting the collet or the stud of a hairspring

• US Classifications

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