2227858

Information

• Patent Grant
• 2227858

• References
• Source

• Patent Number

  2,227,858

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1941
  84 years ago

• CPC

  • G04D7/1285 - whereby the adjustment device works on the mainspring
  • G04C3/04 - wherein movement is regulated by a balance

• US Classifications

  • 073 - Measuring and testing
  • 968 - Horology