2297228

Information

• Patent Grant
• 2297228

• References
• Source

• Patent Number

  2,297,228

• Date Filed

  Not available

• Date Issued

  Tuesday, September 29, 1942
  82 years ago

• CPC

  • H04B7/10 - using a single aerial system characterised by its polarisation or directive properties
  • G01S1/02 - using radio waves
  • G01S1/10 - using amplitude comparison of signals transmitted sequentially from aerials or aerial systems having differently-oriented overlapping directivity-characteristics

• US Classifications

  • 342 - Communications: directive radio wave systems and devices