1642102

Information

• Patent Grant
• 1642102

• References
• Source

• Patent Number

  1,642,102

• Date Filed

  Not available

• Date Issued

  Tuesday, September 13, 1927
  97 years ago

• CPC

  • G04B31/0087 - with jewel hole only
  • Y10T29/23 - Gem and jewel setting
  • Y10T29/49579 - Watch or clock making

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 029 - Metal working
  • 968 - Horology