1757120

Information

• Patent Grant
• 1757120

• References
• Source

• Patent Number

  1,757,120

• Date Filed

  Not available

• Date Issued

  Tuesday, May 6, 1930
  94 years ago

• CPC

  • G04D3/045 - for lever, Impulse-pin
  • Y10T29/23 - Gem and jewel setting

• US Classifications

  • 081 - Tools
  • 029 - Metal working
  • 968 - Horology