3900877

Information

• Patent Grant
• 3900877

• References
• Source

• Patent Number

  3,900,877

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1975
  49 years ago

• CPC

  • G01S1/30 - the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference
  • G01S1/44 - Rotating or oscillating beam beacons defining directions in the plane of rotation or oscillation

• US Classifications

  • 342 - Communications: directive radio wave systems and devices