360641

Information

• Patent Grant
• 360641

• References
• Source

• Patent Number

  360,641

• Date Filed

  Not available

• Date Issued

  Tuesday, April 5, 1887
  137 years ago

• CPC

  • G04B25/02 - by feeling Clocks or watches for blind persons

• US Classifications

  • 368 - Horology: time measuring systems or devices