3021402

Information

• Patent Grant
• 3021402

• References
• Source

• Patent Number

  3,021,402

• Date Filed

  Not available

• Date Issued

  Tuesday, February 13, 1962
  62 years ago

• CPC

  • G01P1/10 - for indicating predetermined speeds
  • H01H3/56 - using electromagnetic clutch

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 073 - Measuring and testing
  • 310 - Electrical generator or motor structure
  • 340 - Communications: electrical