3868556

Information

• Patent Grant
• 3868556

• References
• Source

• Patent Number

  3,868,556

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1975
  50 years ago

• CPC

  • G05D3/1409 - with dc amplifier chain
  • G01R17/08 - in which a force or torque representing the measured value is balanced by a force or torque representing the reference value
  • G05D3/14 - using an analogue comparing device

• US Classifications

  • 318 - Electricity: motive power systems
  • 324 - Electricity: measuring and testing