3659291

Information

• Patent Grant
• 3659291

• References
• Source

• Patent Number

  3,659,291

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1972
  53 years ago

• CPC

  • H03K5/082 - with an adaptive threshold
  • G01S1/02 - using radio waves
  • G06G7/22 - for evaluating trigonometric functions for conversion of co-ordinates for computations involving vector quantities
  • G06G7/28 - for synthesising functions by piece-wise approximation
  • H03K3/26 - by the use, as active elements, of bipolar transistors with internal or external positive feedback
  • H03K4/066 - using a Miller-integrator

• US Classifications

  • 701 - Data processing: vehicles, navigation, and relative location
  • 342 - Communications: directive radio wave systems and devices