1929631

Information

• Patent Grant
• 1929631

• References
• Source

• Patent Number

  1,929,631

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1933
  91 years ago

• CPC

  • G04C1/024 - winding-up springs

• US Classifications

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