2091146

Information

• Patent Grant
• 2091146

• References
• Source

• Patent Number

  2,091,146

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1937
  87 years ago

• CPC

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

• US Classifications

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