1306140

Information

• Patent Grant
• 1306140

• References
• Source

• Patent Number

  1,306,140

• Date Filed

  Not available

• Date Issued

  Tuesday, June 10, 1919
  105 years ago

• CPC

  • G04B43/005 - Protection against temperature influences

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology