422616

Information

• Patent Grant
• 422616

• References
• Source

• Patent Number

  422,616

• Date Filed

  Not available

• Date Issued

  Tuesday, March 4, 1890
  135 years ago

• CPC

  • G04D7/08 - for balance wheels
  • G04D7/1235 - for the control mechanism only (found from outside the clockwork)

• US Classifications

  • 073 - Measuring and testing