3921941

Information

• Patent Grant
• 3921941

• References
• Source

• Patent Number

  3,921,941

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • G05D1/063 - by acting on the motors
  • G01P3/62 - Devices characterised by the determination or the variation of atmospheric pressure with height to measure the vertical components of speed
  • G01P5/00 - Measuring speed of fluids
  • B64D2700/62245 - Electric circuits for rate of change indicators

• US Classifications

  • 244 - Aeronautics and astronautics
  • 073 - Measuring and testing
  • 701 - Data processing: vehicles, navigation, and relative location