1657105

Information

• Patent Grant
• 1657105

• References
• Source

• Patent Number

  1,657,105

• Date Filed

  Not available

• Date Issued

  Tuesday, January 24, 1928
  97 years ago

• CPC

  • G04C11/005 - by changing the ratio of the driving-gear

• US Classifications

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