3689926

Information

• Patent Grant
• 3689926

• References
• Source

• Patent Number

  3,689,926

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  52 years ago

• CPC

  • G01S1/304 - Analogous systems in which a beat frequency, obtained by heterodyning the signals, is compared in phase with a reference signal obtained by heterodyning the signals in a fixed reference point and transmitted therefrom

• US Classifications

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