3749999

Information

• Patent Grant
• 3749999

• References
• Source

• Patent Number

  3,749,999

• Date Filed

  Not available

• Date Issued

  Tuesday, July 31, 1973
  51 years ago

• CPC

  • G05B19/291 - the positional error is used to control continuously the servomotor according to its magnitude
  • G01D5/48 - using wave or particle radiation means
  • G05D3/20 - using a digital comparing device
  • G05B2219/37271 - Using standing waves
  • G05B2219/37276 - Position changes frequency

• US Classifications

  • 318 - Electricity: motive power systems