2549721

Information

• Patent Grant
• 2549721

• References
• Source

• Patent Number

  2,549,721

• Date Filed

  Not available

• Date Issued

  Tuesday, April 17, 1951
  73 years ago

• CPC

  • H01Q19/20 - Producing pencil beam by two cylindrical focusing devices with their focal lines orthogonally disposed
  • G01S1/02 - using radio waves
  • H01Q3/18 - wherein the primary active element is movable and the reflecting device is fixed

• US Classifications

  • 343 - Communications: radio wave antennas
  • 333 - Wave transmission lines and networks