3668683

Information

• Patent Grant
• 3668683

• References
• Source

• Patent Number

  3,668,683

• Date Filed

  Not available

• Date Issued

  Tuesday, June 6, 1972
  52 years ago

• CPC

  • G04C21/326 - adjustable from the different places themselves

• US Classifications

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