2981947

Information

• Patent Grant
• 2981947

• References
• Source

• Patent Number

  2,981,947

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1961
  63 years ago

• CPC

  • H01Q21/0062 - the slots being disposed around the feeding waveguide

• US Classifications

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