1520594

Information

• Patent Grant
• 1520594

• References
• Source

• Patent Number

  1,520,594

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1924
  100 years ago

• CPC

  • G04D3/0064 - for cases
  • G04D3/029 - for components of the means protecting the mechanism from external influences

• US Classifications

  • 072 - Metal deforming
  • 968 - Horology