2690508

Information

• Patent Grant
• 2690508

• References
• Source

• Patent Number

  2,690,508

• Date Filed

  Not available

• Date Issued

  Tuesday, September 28, 1954
  70 years ago

• CPC

  • H01Q3/12 - using mechanical relative movement between primary active elements and secondary devices of aerials or aerial systems
  • H01Q13/0225 - of non-circular cross-section
  • H01Q19/12 - wherein the surfaces are concave
  • H01Q19/18 - having two or more spaced reflecting surfaces
  • H01Q19/20 - Producing pencil beam by two cylindrical focusing devices with their focal lines orthogonally disposed

• US Classifications

  • 343 - Communications: radio wave antennas