1217523

Information

• Patent Grant
• 1217523

• References
• Source

• Patent Number

  1,217,523

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1917
  107 years ago

• CPC

  • G04B23/06 - adjustable for several preselected times with automatic stopping of the signal

• US Classifications

  • 368 - Horology: time measuring systems or devices