2270401

Information

• Patent Grant
• 2270401

• References
• Source

• Patent Number

  2,270,401

• Date Filed

  Not available

• Date Issued

  Tuesday, January 20, 1942
  83 years ago

• CPC

  • H01Q1/48 - Earthing means Earth screens Counterpoises
  • G01S1/02 - using radio waves
  • G01S3/085 - by using spaced loop aerial systems

• US Classifications

  • 342 - Communications: directive radio wave systems and devices