287710

Information

• Patent Grant
• 287710

• References
• Source

• Patent Number

  287,710

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1883
  141 years ago

• CPC

  • G04C21/04 - Indicating the time of the day

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 379 - Telephonic communications