2019769

Information

• Patent Grant
• 2019769

• References
• Source

• Patent Number

  2,019,769

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1935
  89 years ago

• CPC

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

• US Classifications

  • 324 - Electricity: measuring and testing
  • 073 - Measuring and testing
  • 200 - Electricity: circuit makers and breakers
  • 968 - Horology