3718896

Information

• Patent Grant
• 3718896

• References
• Source

• Patent Number

  3,718,896

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1973
  52 years ago

• CPC

  • G01S15/12 - wherein the pulse-recurrence frequency is varied to provide a desired time relationship between the transmission of a pulse and the receipt of the echo of a preceding pulse
  • G01S7/527 - Extracting wanted echo signals
  • G01S13/931 - between land vehicles; between land vehicles and fixed obstacles
  • G01S15/04 - Systems determining presence of a target
  • G09B21/003 - using tactile presentation of the information
  • Y10S367/91 - Portable sonar devices

• US Classifications

  • 367 - Communications, electrical: acoustic wave systems and devices
  • 342 - Communications: directive radio wave systems and devices