2664561

Information

• Patent Grant
• 2664561

• References
• Source

• Patent Number

  2,664,561

• Date Filed

  Not available

• Date Issued

  Tuesday, December 29, 1953
  71 years ago

• CPC

  • B61L3/125 - using short-range radio transmission
  • B61L23/12 - partly operated by train
  • G01S13/78 - discriminating between different kinds of targets, e.g. IFF-radar
  • G01S13/9303 - between aircraft or spacecraft in flight
  • H04J3/00 - Time-division multiplex systems

• US Classifications

  • 342 - Communications: directive radio wave systems and devices