1222369

Information

• Patent Grant
• 1222369

• References
• Source

• Patent Number

  1,222,369

• Date Filed

  Not available

• Date Issued

  Tuesday, April 10, 1917
  107 years ago

• CPC

  • G04B25/02 - by feeling Clocks or watches for blind persons
  • Y10S116/17 - Tactile

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 116 - Signals and indicators
  • 968 - Horology