3691561

Information

• Patent Grant
• 3691561

• References
• Source

• Patent Number

  3,691,561

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  53 years ago

• CPC

  • H01Q21/205 - providing an omnidirectional coverage
  • G01S3/12 - Means for determining sense of direction
  • H01Q9/28 - Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
  • H01Q21/20 - the units being spaced along or adjacent to a curvilinear path

• US Classifications

  • 343 - Communications: radio wave antennas