3103660

Information

• Patent Grant
• 3103660

• References
• Source

• Patent Number

  3,103,660

• Date Filed

  Not available

• Date Issued

  Tuesday, September 10, 1963
  61 years ago

• CPC

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

• US Classifications

  • 340 - Communications: electrical
  • 200 - Electricity: circuit makers and breakers
  • 968 - Horology