2687521

Information

• Patent Grant
• 2687521

• References
• Source

• Patent Number

  2,687,521

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1954
  71 years ago

• CPC

  • G01S3/023 - Monitoring or calibrating
  • G01S3/08 - Means for reducing polarisation errors

• US Classifications

  • 342 - Communications: directive radio wave systems and devices