3544996

Information

• Patent Grant
• 3544996

• References
• Source

• Patent Number

  3,544,996

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1970
  54 years ago

• CPC

  • G01S7/40 - Means for monitoring or calibrating
  • G01S7/4008 - of transmitters
  • G01S7/4017 - of HF systems
  • G01S7/4021 - of receivers
  • G01S7/4052 - by simulation of echoes
  • G01S13/14 - wherein a voltage or current pulse is initiated and terminated in accordance respectively with the pulse transmission and echo reception
  • G01S2007/4065 - involving a delay line

• US Classifications

  • 342 - Communications: directive radio wave systems and devices