3720811

Information

• Patent Grant
• 3720811

• References
• Source

• Patent Number

  3,720,811

• Date Filed

  Not available

• Date Issued

  Tuesday, March 13, 1973
  51 years ago

• CPC

  • G06M1/044 - with escapements
  • G06M1/02 - Housing
  • G06M1/102 - by magnetic or electromagnetic means
  • G06M1/183 - with drums
  • G06M1/274 - using magnetic means using Hall-effect devices
  • G06M3/065 - with drums

• US Classifications

  • 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems
  • 340 - Communications: electrical