1420447

Information

• Patent Grant
• 1420447

• References
• Source

• Patent Number

  1,420,447

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1922
  102 years ago

• CPC

  • G04B18/04 - Adjusting the beat of the pendulum, balance, or the like

• US Classifications

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