2158725

Information

• Patent Grant
• 2158725

• References
• Source

• Patent Number

  2,158,725

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1939
  86 years ago

• CPC

  • G04D7/1285 - whereby the adjustment device works on the mainspring

• US Classifications

  • 073 - Measuring and testing
  • 968 - Horology