451181

Information

• Patent Grant
• 451181

• References
• Source

• Patent Number

  451,181

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1891
  133 years ago

• CPC

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

• US Classifications

  • 073 - Measuring and testing
  • 324 - Electricity: measuring and testing